Finding the Fourth Proportional to 88,811.40, 133,217.10 and 81,553.80
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Solution
The fourth proportional to 88,811.40, 133,217.10 and 81,553.80 is: 122,330.70
Step by Step Solution
- Step 1: Write the proportion equation
88,811.40 : 133,217.10 = 81,553.80 : x - Step 2: Convert to fraction form
88,811.40/133,217.10 = 81,553.80/x - Step 3: Cross multiply
88,811.40x = 133,217.10 × 81,553.80 - Step 4: Simplify right side
88,811.40x = 10,864,360,729.98 - Step 5: Solve for x
x = 10,864,360,729.98/88,811.40 - Step 6: Final answer
x = 122,330.70
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1.5x scale
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.