Finding the Fourth Proportional to 106,471,893.20, 159,707,839.80 and 68,208,141.20
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Solution
The fourth proportional to 106,471,893.20, 159,707,839.80 and 68,208,141.20 is: 102,312,211.80
Step by Step Solution
- Step 1: Write the proportion equation
106,471,893.20 : 159,707,839.80 = 68,208,141.20 : x - Step 2: Convert to fraction form
106,471,893.20/159,707,839.80 = 68,208,141.20/x - Step 3: Cross multiply
106,471,893.20x = 159,707,839.80 × 68,208,141.20 - Step 4: Simplify right side
106,471,893.20x = 10,893,374,887,825,382 - Step 5: Solve for x
x = 10,893,374,887,825,382/106,471,893.20 - Step 6: Final answer
x = 102,312,211.80
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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.