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Finding the Fourth Proportional to 125,299.88, 187,950.45 and 31,805.66

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Solution

The fourth proportional to 125,299.88, 187,950.45 and 31,805.66 is: 47,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,299.88 : 187,950.45 = 31,805.66 : x
  2. Step 2: Convert to fraction form
    125,299.88/187,950.45 = 31,805.66/x
  3. Step 3: Cross multiply
    125,299.88x = 187,950.45 × 31,805.66
  4. Step 4: Simplify right side
    125,299.88x = 5,977,888,109.55
  5. Step 5: Solve for x
    x = 5,977,888,109.55/125,299.88
  6. Step 6: Final answer
    x = 47,708.65

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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.