جدول شما را به این صورت رسم کردم:
\documentclass[12pt]{article}
\usepackage{amsmath}
\usepackage{array}
\newcolumntype{M}[1]{>{\centering\arraybackslash}m{#1}}
\newcolumntype{N}{@{}m{0pt}@{}}
\begin{document}
\begin{center}
\begin{tabular}{ | M{1.5cm} | M{1.5cm} | M{1.5cm} | M{2cm} N }
\hline
$\dfrac{P_{0}}{Q_{0}}$ & $\dfrac{P_{1}}{Q_{0}}$ & $\dfrac{P_{2}}{Q_{0}}$ & \\[1.5cm]
\hline
$\dfrac{P_{0}}{Q_{1}}$ & $\dfrac{P_{1}}{Q_{1}}$ & $\dfrac{P_{2}}{Q_{1}}$ & \\[1.5cm]
\hline
$\dfrac{P_{0}}{Q_{2}}$ & $\dfrac{P_{1}}{Q_{2}}$ & $\dfrac{P_{2}}{Q_{2}}$ & \\[1.5cm]
\hline
&&&&\\[1.5cm]
\end{tabular}
\end{center}
\end{document}
نتیجه:
