Finding the Fourth Proportional to 129,294.19, 178,425.44 and 71,939.00
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Solution
The fourth proportional to 129,294.19, 178,425.44 and 71,939.00 is: 99,275.52
Step by Step Solution
- Step 1: Write the proportion equation
129,294.19 : 178,425.44 = 71,939.00 : x - Step 2: Convert to fraction form
129,294.19/178,425.44 = 71,939.00/x - Step 3: Cross multiply
129,294.19x = 178,425.44 × 71,939.00 - Step 4: Simplify right side
129,294.19x = 12,835,748,084.30 - Step 5: Solve for x
x = 12,835,748,084.30/129,294.19 - Step 6: Final answer
x = 99,275.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.