What is the 6th term in the geometric sequence described by this explicit formula ?

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

In a column proof the right column states your reasons

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities