Finding the Fourth Proportional to 134,611.92, 185,757.80 and 78,041.68
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Solution
The fourth proportional to 134,611.92, 185,757.80 and 78,041.68 is: 107,693.66
Step by Step Solution
- Step 1: Write the proportion equation
134,611.92 : 185,757.80 = 78,041.68 : x - Step 2: Convert to fraction form
134,611.92/185,757.80 = 78,041.68/x - Step 3: Cross multiply
134,611.92x = 185,757.80 × 78,041.68 - Step 4: Simplify right side
134,611.92x = 14,496,850,785.10 - Step 5: Solve for x
x = 14,496,850,785.10/134,611.92 - Step 6: Final answer
x = 107,693.66
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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.