First we start using ratio form to write down the thing we know
[tex]\begin{gathered} \text{men:women} \\ 8\colon5 \\ 128\colon x \end{gathered}[/tex]now, using the rule of three we have
[tex]\begin{gathered} x=\frac{128\cdot5}{8} \\ =\frac{640}{8} \\ =80 \end{gathered}[/tex]Then, we have 80 women working for the company.
Adding the number of men and women, we conclude that there are 208 employess in the company.