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Which number will best complete the relationship given below? 4 : 128 :: 6 : ?

A192

B195

C194

D193

Answer:

A. 192

Read Explanation:

4th proportion eqn is

a : b : : c : d

then d=b×cad=\frac{b\times c}{a}

=128×64=192\frac{128\times6}{4}=192


Related Questions:

In three of the following four number pairs, the numbers are related in the same way and thus form a group. Which number pair DOES NOT belong to that group? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding / subtracting /multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the number-pair in which the numbers are related in the same way as are the numbers of the following number-pairs. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

21, 105

19, 95

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