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Finding the Fourth Proportional to 133,279.08, 199,819.86 and 80,676.12

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Solution

The fourth proportional to 133,279.08, 199,819.86 and 80,676.12 is: 120,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,279.08 : 199,819.86 = 80,676.12 : x
  2. Step 2: Convert to fraction form
    133,279.08/199,819.86 = 80,676.12/x
  3. Step 3: Cross multiply
    133,279.08x = 199,819.86 × 80,676.12
  4. Step 4: Simplify right side
    133,279.08x = 16,120,691,003.74
  5. Step 5: Solve for x
    x = 16,120,691,003.74/133,279.08
  6. Step 6: Final answer
    x = 120,954.40

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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.