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Finding the Fourth Proportional to 125,514.40, 188,267.76 and 42,401.44

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Solution

The fourth proportional to 125,514.40, 188,267.76 and 42,401.44 is: 63,600.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,514.40 : 188,267.76 = 42,401.44 : x
  2. Step 2: Convert to fraction form
    125,514.40/188,267.76 = 42,401.44/x
  3. Step 3: Cross multiply
    125,514.40x = 188,267.76 × 42,401.44
  4. Step 4: Simplify right side
    125,514.40x = 7,982,824,129.57
  5. Step 5: Solve for x
    x = 7,982,824,129.57/125,514.40
  6. Step 6: Final answer
    x = 63,600.86

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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.