Home / 198,512.66-297,694.46-72,121.68

Finding the Fourth Proportional to 198,512.66, 297,694.46 and 72,121.68

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Solution

The fourth proportional to 198,512.66, 297,694.46 and 72,121.68 is: 108,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,512.66 : 297,694.46 = 72,121.68 : x
  2. Step 2: Convert to fraction form
    198,512.66/297,694.46 = 72,121.68/x
  3. Step 3: Cross multiply
    198,512.66x = 297,694.46 × 72,121.68
  4. Step 4: Simplify right side
    198,512.66x = 21,470,224,221.28
  5. Step 5: Solve for x
    x = 21,470,224,221.28/198,512.66
  6. Step 6: Final answer
    x = 108,155.44

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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.