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

21 : 112 :: 36: ? :: 51: 272

192

21 : 112 :: 36: ? :: 51: 272

The logic followed here is

21 (7 × 3) : 112 (16 × 7)

51 (17 × 3) : 272(16 × 17)

Similarly

36 (12 × 3) : 192 (16 ×12)