Verified Answer :

\(\frac{1}{6}\) : Common ratio

Check:
=\(-\frac{1}{12}\) ÷ \(\frac{1}{6}\)
=\(-\frac{1}{12}\) × 6
=\(-\frac{1}{2}\)

=\(-\frac{1}{2}\) ÷ \(\frac{1}{6}\)
=\(- \frac{1}{2}\) × 6
=-3