Finding the Fourth Proportional to 129,720.20, 194,472.30 and 54,897.80
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Solution
The fourth proportional to 129,720.20, 194,472.30 and 54,897.80 is: 82,300.99
Step by Step Solution
- Step 1: Write the proportion equation
129,720.20 : 194,472.30 = 54,897.80 : x - Step 2: Convert to fraction form
129,720.20/194,472.30 = 54,897.80/x - Step 3: Cross multiply
129,720.20x = 194,472.30 × 54,897.80 - Step 4: Simplify right side
129,720.20x = 10,676,101,430.94 - Step 5: Solve for x
x = 10,676,101,430.94/129,720.20 - Step 6: Final answer
x = 82,300.99
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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.