Finding the Fourth Proportional to 134,659.92, 201,766.68 and 81,909.84
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Solution
The fourth proportional to 134,659.92, 201,766.68 and 81,909.84 is: 122,728.99
Step by Step Solution
- Step 1: Write the proportion equation
134,659.92 : 201,766.68 = 81,909.84 : x - Step 2: Convert to fraction form
134,659.92/201,766.68 = 81,909.84/x - Step 3: Cross multiply
134,659.92x = 201,766.68 × 81,909.84 - Step 4: Simplify right side
134,659.92x = 16,526,676,476.13 - Step 5: Solve for x
x = 16,526,676,476.13/134,659.92 - Step 6: Final answer
x = 122,728.99
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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.