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Finding the Fourth Proportional to 125,258.63, 187,417.13 and 87,891.62

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Solution

The fourth proportional to 125,258.63, 187,417.13 and 87,891.62 is: 131,507.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,258.63 : 187,417.13 = 87,891.62 : x
  2. Step 2: Convert to fraction form
    125,258.63/187,417.13 = 87,891.62/x
  3. Step 3: Cross multiply
    125,258.63x = 187,417.13 × 87,891.62
  4. Step 4: Simplify right side
    125,258.63x = 16,472,393,794.91
  5. Step 5: Solve for x
    x = 16,472,393,794.91/125,258.63
  6. Step 6: Final answer
    x = 131,507.06

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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.