If the ratio of a to b and the ratio of c to d is given to be equal, then we can write
[tex]\frac{a}{b}=\frac{c}{d}[/tex]Here, it is given that the ratio 1.2 to 42 is the same as the ratio of 4.8 to ---.
Let x be the missing value.
Then, we can write
[tex]\begin{gathered} \frac{1.2}{42}=\frac{4.8}{x} \\ \end{gathered}[/tex]Cross multiply and solve for x.
[tex]\begin{gathered} 1.2x=(4.8)(42) \\ x=\frac{(4.8)(42)}{1.2} \\ x=(4)(42) \\ x=168 \end{gathered}[/tex]Therefore, the missing value is 168.
