Finding the Fourth Proportional to 125,342.88, 187,920.81 and 75,411.28
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Solution
The fourth proportional to 125,342.88, 187,920.81 and 75,411.28 is: 113,060.66
Step by Step Solution
- Step 1: Write the proportion equation
125,342.88 : 187,920.81 = 75,411.28 : x - Step 2: Convert to fraction form
125,342.88/187,920.81 = 75,411.28/x - Step 3: Cross multiply
125,342.88x = 187,920.81 × 75,411.28 - Step 4: Simplify right side
125,342.88x = 14,171,347,881.13 - Step 5: Solve for x
x = 14,171,347,881.13/125,342.88 - Step 6: Final answer
x = 113,060.66
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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.