Home / 198,356.10-273,662.88-126,778.02

Finding the Fourth Proportional to 198,356.10, 273,662.88 and 126,778.02

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Solution

The fourth proportional to 198,356.10, 273,662.88 and 126,778.02 is: 174,909.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,356.10 : 273,662.88 = 126,778.02 : x
  2. Step 2: Convert to fraction form
    198,356.10/273,662.88 = 126,778.02/x
  3. Step 3: Cross multiply
    198,356.10x = 273,662.88 × 126,778.02
  4. Step 4: Simplify right side
    198,356.10x = 34,694,438,073.90
  5. Step 5: Solve for x
    x = 34,694,438,073.90/198,356.10
  6. Step 6: Final answer
    x = 174,909.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.