Finding the Fourth Proportional to 131,761.69, 197,641.84 and 31,921.88
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Solution
The fourth proportional to 131,761.69, 197,641.84 and 31,921.88 is: 47,882.65
Step by Step Solution
- Step 1: Write the proportion equation
131,761.69 : 197,641.84 = 31,921.88 : x - Step 2: Convert to fraction form
131,761.69/197,641.84 = 31,921.88/x - Step 3: Cross multiply
131,761.69x = 197,641.84 × 31,921.88 - Step 4: Simplify right side
131,761.69x = 6,309,099,203.03 - Step 5: Solve for x
x = 6,309,099,203.03/131,761.69 - Step 6: Final answer
x = 47,882.65
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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.