Question : If 16 : $x$ :: $x$ : 196, find the positive value of $x$?

Option 1: 60

Option 2: 62

Option 3: 56

Option 4: 64

Question : If $3: x:: 12: 20$, then what is the value of $x$?

Option 1: 10

Option 2: 6

Option 3: 8

Option 4: 5

Question : Find the value of X for {15 × 32 ÷ 2 × 5} ÷ X=16

Option 1: 75

Option 2: 76

Option 3: 78

Option 4: 55

Question : If x : y : z = 2 : 3 : 4, then what is the value of 7x : 3y : 2z?

Option 1: $14:9:8$

Option 2: $18:7:12$

Option 3: $12:6:11$

Option 4: $16:9:8$

Question : If $2 : x :: 4 : 28$, then find the value of $x$.

Option 1: 15

Option 2: 12

Option 3: 13

Option 4: 14