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Finding the Fourth Proportional to 198,489.17, 273,810.15 and 125,763.72

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Solution

The fourth proportional to 198,489.17, 273,810.15 and 125,763.72 is: 173,487.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,489.17 : 273,810.15 = 125,763.72 : x
  2. Step 2: Convert to fraction form
    198,489.17/273,810.15 = 125,763.72/x
  3. Step 3: Cross multiply
    198,489.17x = 273,810.15 × 125,763.72
  4. Step 4: Simplify right side
    198,489.17x = 34,435,383,037.76
  5. Step 5: Solve for x
    x = 34,435,383,037.76/198,489.17
  6. Step 6: Final answer
    x = 173,487.47

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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.