Home / 198,213.60-297,320.40-131,743.20

Finding the Fourth Proportional to 198,213.60, 297,320.40 and 131,743.20

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Solution

The fourth proportional to 198,213.60, 297,320.40 and 131,743.20 is: 197,614.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,213.60 : 297,320.40 = 131,743.20 : x
  2. Step 2: Convert to fraction form
    198,213.60/297,320.40 = 131,743.20/x
  3. Step 3: Cross multiply
    198,213.60x = 297,320.40 × 131,743.20
  4. Step 4: Simplify right side
    198,213.60x = 39,169,940,921.28
  5. Step 5: Solve for x
    x = 39,169,940,921.28/198,213.60
  6. Step 6: Final answer
    x = 197,614.80

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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.