Finding the Fourth Proportional to 86,107,107.98, 129,221,186.45 and 77,874,422.54
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Solution
The fourth proportional to 86,107,107.98, 129,221,186.45 and 77,874,422.54 is: 116,866,371.56
Step by Step Solution
- Step 1: Write the proportion equation
86,107,107.98 : 129,221,186.45 = 77,874,422.54 : x - Step 2: Convert to fraction form
86,107,107.98/129,221,186.45 = 77,874,422.54/x - Step 3: Cross multiply
86,107,107.98x = 129,221,186.45 × 77,874,422.54 - Step 4: Simplify right side
86,107,107.98x = 10,063,025,274,727,424 - Step 5: Solve for x
x = 10,063,025,274,727,424/86,107,107.98 - Step 6: Final answer
x = 116,866,371.56
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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.