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Finding the Fourth Proportional to 198,002.60, 297,003.90 and 87,410.60

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Solution

The fourth proportional to 198,002.60, 297,003.90 and 87,410.60 is: 131,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,002.60 : 297,003.90 = 87,410.60 : x
  2. Step 2: Convert to fraction form
    198,002.60/297,003.90 = 87,410.60/x
  3. Step 3: Cross multiply
    198,002.60x = 297,003.90 × 87,410.60
  4. Step 4: Simplify right side
    198,002.60x = 25,961,289,101.34
  5. Step 5: Solve for x
    x = 25,961,289,101.34/198,002.60
  6. Step 6: Final answer
    x = 131,115.90

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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.