Finding the Fourth Proportional to 115,516.24, 159,364.20 and 77,724.88
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Solution
The fourth proportional to 115,516.24, 159,364.20 and 77,724.88 is: 107,227.90
Step by Step Solution
- Step 1: Write the proportion equation
115,516.24 : 159,364.20 = 77,724.88 : x - Step 2: Convert to fraction form
115,516.24/159,364.20 = 77,724.88/x - Step 3: Cross multiply
115,516.24x = 159,364.20 × 77,724.88 - Step 4: Simplify right side
115,516.24x = 12,386,563,321.30 - Step 5: Solve for x
x = 12,386,563,321.30/115,516.24 - Step 6: Final answer
x = 107,227.90
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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.