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Finding the Fourth Proportional to 198,073.92, 297,201.60 and 85,788.48

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Solution

The fourth proportional to 198,073.92, 297,201.60 and 85,788.48 is: 128,722.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,073.92 : 297,201.60 = 85,788.48 : x
  2. Step 2: Convert to fraction form
    198,073.92/297,201.60 = 85,788.48/x
  3. Step 3: Cross multiply
    198,073.92x = 297,201.60 × 85,788.48
  4. Step 4: Simplify right side
    198,073.92x = 25,496,473,517.57
  5. Step 5: Solve for x
    x = 25,496,473,517.57/198,073.92
  6. Step 6: Final answer
    x = 128,722.01

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1.5x scale

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.