Home / 137,990.12-206,572.61-84,513.71

Finding the Fourth Proportional to 137,990.12, 206,572.61 and 84,513.71

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Solution

The fourth proportional to 137,990.12, 206,572.61 and 84,513.71 is: 126,517.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,990.12 : 206,572.61 = 84,513.71 : x
  2. Step 2: Convert to fraction form
    137,990.12/206,572.61 = 84,513.71/x
  3. Step 3: Cross multiply
    137,990.12x = 206,572.61 × 84,513.71
  4. Step 4: Simplify right side
    137,990.12x = 17,458,218,383.20
  5. Step 5: Solve for x
    x = 17,458,218,383.20/137,990.12
  6. Step 6: Final answer
    x = 126,517.89

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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.