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Finding the Fourth Proportional to 125,266.69, 187,429.20 and 87,899.68

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Solution

The fourth proportional to 125,266.69, 187,429.20 and 87,899.68 is: 131,519.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,266.69 : 187,429.20 = 87,899.68 : x
  2. Step 2: Convert to fraction form
    125,266.69/187,429.20 = 87,899.68/x
  3. Step 3: Cross multiply
    125,266.69x = 187,429.20 × 87,899.68
  4. Step 4: Simplify right side
    125,266.69x = 16,474,966,702.66
  5. Step 5: Solve for x
    x = 16,474,966,702.66/125,266.69
  6. Step 6: Final answer
    x = 131,519.13

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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.