Select the option that is related to the fourth number in the same way as the first number is related to the second number and fifth number is related to sixth number.

8 : 128 :: ? : 176 :: 16 : 256

11

8 : 128 :: ? : 176 :: 16 : 256

The logic followed here is :

Ist number × 16 =  IInd number

As

8 × 16 =  128

16 × 16 = 256

Similarly

11 × 16 =  176