Finding the Fourth Proportional to 99,411.31, 148,837.11 and 74,566.99
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Solution
The fourth proportional to 99,411.31, 148,837.11 and 74,566.99 is: 111,640.57
Step by Step Solution
- Step 1: Write the proportion equation
99,411.31 : 148,837.11 = 74,566.99 : x - Step 2: Convert to fraction form
99,411.31/148,837.11 = 74,566.99/x - Step 3: Cross multiply
99,411.31x = 148,837.11 × 74,566.99 - Step 4: Simplify right side
99,411.31x = 11,098,335,293.00 - Step 5: Solve for x
x = 11,098,335,293.00/99,411.31 - Step 6: Final answer
x = 111,640.57
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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.