$\displaystyle \frac{256}{81}$\displaystyle \frac{256}{81}

$\displaystyle \frac{64}{27}$\displaystyle \frac{64}{27}

$\displaystyle \frac{16}{9}$\displaystyle \frac{16}{9}

$\displaystyle \frac{9}{16}$\displaystyle \frac{9}{16}