ANSWER
135,000 women are in this city
EXPLANATION
The given ratio of men to women is 3:1
The total ratio is 3+1=4.
The total number of men and women in this city is 54,000.
The number of women in this city is given by
[tex] \frac{ratio \: of \: women}{total \: ratio} \times total \: population[/tex]
[tex] \frac{1}{4} \times 54000[/tex]
[tex] = 13500[/tex]
Therefore the total number of women in this city is 135,000