Home / 84,819.40-127,229.10-76,654.60

Finding the Fourth Proportional to 84,819.40, 127,229.10 and 76,654.60

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Solution

The fourth proportional to 84,819.40, 127,229.10 and 76,654.60 is: 114,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,819.40 : 127,229.10 = 76,654.60 : x
  2. Step 2: Convert to fraction form
    84,819.40/127,229.10 = 76,654.60/x
  3. Step 3: Cross multiply
    84,819.40x = 127,229.10 × 76,654.60
  4. Step 4: Simplify right side
    84,819.40x = 9,752,695,768.86
  5. Step 5: Solve for x
    x = 9,752,695,768.86/84,819.40
  6. Step 6: Final answer
    x = 114,981.90

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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.