Finding the Fourth Proportional to 187,640.80, 281,489.84 and 75,320.80
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Solution
The fourth proportional to 187,640.80, 281,489.84 and 75,320.80 is: 112,992.70
Step by Step Solution
- Step 1: Write the proportion equation
187,640.80 : 281,489.84 = 75,320.80 : x - Step 2: Convert to fraction form
187,640.80/281,489.84 = 75,320.80/x - Step 3: Cross multiply
187,640.80x = 281,489.84 × 75,320.80 - Step 4: Simplify right side
187,640.80x = 21,202,039,940.67 - Step 5: Solve for x
x = 21,202,039,940.67/187,640.80 - Step 6: Final answer
x = 112,992.70
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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.