Finding the Fourth Proportional to 135,600.92, 187,134.84 and 78,257.78
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Solution
The fourth proportional to 135,600.92, 187,134.84 and 78,257.78 is: 107,998.95
Step by Step Solution
- Step 1: Write the proportion equation
135,600.92 : 187,134.84 = 78,257.78 : x - Step 2: Convert to fraction form
135,600.92/187,134.84 = 78,257.78/x - Step 3: Cross multiply
135,600.92x = 187,134.84 × 78,257.78 - Step 4: Simplify right side
135,600.92x = 14,644,757,139.06 - Step 5: Solve for x
x = 14,644,757,139.06/135,600.92 - Step 6: Final answer
x = 107,998.95
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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.