Finding the Fourth Proportional to 129,838.08, 194,757.12 and 31,342.08
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Solution
The fourth proportional to 129,838.08, 194,757.12 and 31,342.08 is: 47,013.12
Step by Step Solution
- Step 1: Write the proportion equation
129,838.08 : 194,757.12 = 31,342.08 : x - Step 2: Convert to fraction form
129,838.08/194,757.12 = 31,342.08/x - Step 3: Cross multiply
129,838.08x = 194,757.12 × 31,342.08 - Step 4: Simplify right side
129,838.08x = 6,104,093,235.61 - Step 5: Solve for x
x = 6,104,093,235.61/129,838.08 - Step 6: Final answer
x = 47,013.12
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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.