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Finding the Fourth Proportional to 125,401.20, 188,101.80 and 36,651.12

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Solution

The fourth proportional to 125,401.20, 188,101.80 and 36,651.12 is: 54,976.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,401.20 : 188,101.80 = 36,651.12 : x
  2. Step 2: Convert to fraction form
    125,401.20/188,101.80 = 36,651.12/x
  3. Step 3: Cross multiply
    125,401.20x = 188,101.80 × 36,651.12
  4. Step 4: Simplify right side
    125,401.20x = 6,894,141,644.02
  5. Step 5: Solve for x
    x = 6,894,141,644.02/125,401.20
  6. Step 6: Final answer
    x = 54,976.68

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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.