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Finding the Fourth Proportional to 87,925.80, 131,888.70 and 82,741.80

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Solution

The fourth proportional to 87,925.80, 131,888.70 and 82,741.80 is: 124,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,925.80 : 131,888.70 = 82,741.80 : x
  2. Step 2: Convert to fraction form
    87,925.80/131,888.70 = 82,741.80/x
  3. Step 3: Cross multiply
    87,925.80x = 131,888.70 × 82,741.80
  4. Step 4: Simplify right side
    87,925.80x = 10,912,708,437.66
  5. Step 5: Solve for x
    x = 10,912,708,437.66/87,925.80
  6. Step 6: Final answer
    x = 124,112.70

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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.