Finding the Fourth Proportional to 147.09, 202.99 and 84.91
Calculator
Solution
The fourth proportional to 147.09, 202.99 and 84.91 is: 117.18
Step by Step Solution
- Step 1: Write the proportion equation
147.09 : 202.99 = 84.91 : x - Step 2: Convert to fraction form
147.09/202.99 = 84.91/x - Step 3: Cross multiply
147.09x = 202.99 × 84.91 - Step 4: Simplify right side
147.09x = 17,235.88 - Step 5: Solve for x
x = 17,235.88/147.09 - Step 6: Final answer
x = 117.18
Related Problems
Find fourth proportional to 73.55, 101.50 and 42.46
Half scale
Find fourth proportional to 294.18, 405.98 and 169.82
Double scale
Find fourth proportional to 148.09, 204.37 and 85.91
Similar ratio
Find fourth proportional to 220.64, 304.49 and 127.37
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.