-243
81 Each number is 3 x the previous number. So, 3 x 27 = 81.
243
81
45
243
-243
It is 3 times 81 = 243
81
45 54
Each number is one third of the previous number, the next number in the series would be 3
Each number is 1/3 the value of the one to the left. The next number in the series is... 3.
Next number= 27 X 3 = 81.
729 is the next number in the sequence. You times each number by the past number times by three e.g. 3x3=9, 9x3=27, 27x3= 243, 243x3=729
243 each number is 3 times larger than previous 1 x 3 = 3 3 x 3 = 9 9 x 3 = 27 27 x 3 = 81 81 x 3 = 243
81 Each number is 3 x the previous number. So, 3 x 27 = 81.
For each term, multiply the previous by -3. So, 27*-3=-81. -81 is the next term.