Home / 87,115.46-119,436.64-85,540.82

Finding the Fourth Proportional to 87,115.46, 119,436.64 and 85,540.82

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Solution

The fourth proportional to 87,115.46, 119,436.64 and 85,540.82 is: 117,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,115.46 : 119,436.64 = 85,540.82 : x
  2. Step 2: Convert to fraction form
    87,115.46/119,436.64 = 85,540.82/x
  3. Step 3: Cross multiply
    87,115.46x = 119,436.64 × 85,540.82
  4. Step 4: Simplify right side
    87,115.46x = 10,216,707,312.61
  5. Step 5: Solve for x
    x = 10,216,707,312.61/87,115.46
  6. Step 6: Final answer
    x = 117,277.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.