Finding the Fourth Proportional to 123,781,715.68, 170,822,863.10 and 68,029,112.31
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Solution
The fourth proportional to 123,781,715.68, 170,822,863.10 and 68,029,112.31 is: 93,882,425.81
Step by Step Solution
- Step 1: Write the proportion equation
123,781,715.68 : 170,822,863.10 = 68,029,112.31 : x - Step 2: Convert to fraction form
123,781,715.68/170,822,863.10 = 68,029,112.31/x - Step 3: Cross multiply
123,781,715.68x = 170,822,863.10 × 68,029,112.31 - Step 4: Simplify right side
123,781,715.68x = 11,620,927,738,945,654 - Step 5: Solve for x
x = 11,620,927,738,945,654/123,781,715.68 - Step 6: Final answer
x = 93,882,425.81
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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.