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Finding the Fourth Proportional to 125,149.47, 187,684.95 and 40,890.44

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Solution

The fourth proportional to 125,149.47, 187,684.95 and 40,890.44 is: 61,322.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,149.47 : 187,684.95 = 40,890.44 : x
  2. Step 2: Convert to fraction form
    125,149.47/187,684.95 = 40,890.44/x
  3. Step 3: Cross multiply
    125,149.47x = 187,684.95 × 40,890.44
  4. Step 4: Simplify right side
    125,149.47x = 7,674,520,186.88
  5. Step 5: Solve for x
    x = 7,674,520,186.88/125,149.47
  6. Step 6: Final answer
    x = 61,322.83

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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.