Finding the Fourth Proportional to 143,653,569.80, 215,480,354.70 and 86,257,941.80
Calculator
Solution
The fourth proportional to 143,653,569.80, 215,480,354.70 and 86,257,941.80 is: 129,386,912.70
Step by Step Solution
- Step 1: Write the proportion equation
143,653,569.80 : 215,480,354.70 = 86,257,941.80 : x - Step 2: Convert to fraction form
143,653,569.80/215,480,354.70 = 86,257,941.80/x - Step 3: Cross multiply
143,653,569.80x = 215,480,354.70 × 86,257,941.80 - Step 4: Simplify right side
143,653,569.80x = 18,586,891,894,755,956 - Step 5: Solve for x
x = 18,586,891,894,755,956/143,653,569.80 - Step 6: Final answer
x = 129,386,912.70
Related Problems
Find fourth proportional to 71,826,784.90, 107,740,177.35 and 43,128,970.90
Half scale
Find fourth proportional to 287,307,139.60, 430,960,709.40 and 172,515,883.60
Double scale
Find fourth proportional to 143,653,570.80, 215,480,356.20 and 86,257,942.80
Similar ratio
Find fourth proportional to 215,480,354.70, 323,220,532.05 and 129,386,912.70
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.