Finding the Fourth Proportional to 102,789,734.88, 141,881,592.96 and 66,120,309.12
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Solution
The fourth proportional to 102,789,734.88, 141,881,592.96 and 66,120,309.12 is: 91,266,455.70
Step by Step Solution
- Step 1: Write the proportion equation
102,789,734.88 : 141,881,592.96 = 66,120,309.12 : x - Step 2: Convert to fraction form
102,789,734.88/141,881,592.96 = 66,120,309.12/x - Step 3: Cross multiply
102,789,734.88x = 141,881,592.96 × 66,120,309.12 - Step 4: Simplify right side
102,789,734.88x = 9,381,254,784,953,216 - Step 5: Solve for x
x = 9,381,254,784,953,216/102,789,734.88 - Step 6: Final answer
x = 91,266,455.70
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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.