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Finding the Fourth Proportional to 133,879.80, 200,819.70 and 131,806.20

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Solution

The fourth proportional to 133,879.80, 200,819.70 and 131,806.20 is: 197,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,879.80 : 200,819.70 = 131,806.20 : x
  2. Step 2: Convert to fraction form
    133,879.80/200,819.70 = 131,806.20/x
  3. Step 3: Cross multiply
    133,879.80x = 200,819.70 × 131,806.20
  4. Step 4: Simplify right side
    133,879.80x = 26,469,281,542.14
  5. Step 5: Solve for x
    x = 26,469,281,542.14/133,879.80
  6. Step 6: Final answer
    x = 197,709.30

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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.