Finding the Fourth Proportional to 81,167.30, 121,750.95 and 68,725.70
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Solution
The fourth proportional to 81,167.30, 121,750.95 and 68,725.70 is: 103,088.55
Step by Step Solution
- Step 1: Write the proportion equation
81,167.30 : 121,750.95 = 68,725.70 : x - Step 2: Convert to fraction form
81,167.30/121,750.95 = 68,725.70/x - Step 3: Cross multiply
81,167.30x = 121,750.95 × 68,725.70 - Step 4: Simplify right side
81,167.30x = 8,367,419,264.42 - Step 5: Solve for x
x = 8,367,419,264.42/81,167.30 - Step 6: Final answer
x = 103,088.55
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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.