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Finding the Fourth Proportional to 125,793.40, 188,835.90 and 75,929.80

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Solution

The fourth proportional to 125,793.40, 188,835.90 and 75,929.80 is: 113,982.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,793.40 : 188,835.90 = 75,929.80 : x
  2. Step 2: Convert to fraction form
    125,793.40/188,835.90 = 75,929.80/x
  3. Step 3: Cross multiply
    125,793.40x = 188,835.90 × 75,929.80
  4. Step 4: Simplify right side
    125,793.40x = 14,338,272,119.82
  5. Step 5: Solve for x
    x = 14,338,272,119.82/125,793.40
  6. Step 6: Final answer
    x = 113,982.71

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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.