Home / 121,731.43-182,349.19-99,321.97

Finding the Fourth Proportional to 121,731.43, 182,349.19 and 99,321.97

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Solution

The fourth proportional to 121,731.43, 182,349.19 and 99,321.97 is: 148,780.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,731.43 : 182,349.19 = 99,321.97 : x
  2. Step 2: Convert to fraction form
    121,731.43/182,349.19 = 99,321.97/x
  3. Step 3: Cross multiply
    121,731.43x = 182,349.19 × 99,321.97
  4. Step 4: Simplify right side
    121,731.43x = 18,111,280,778.70
  5. Step 5: Solve for x
    x = 18,111,280,778.70/121,731.43
  6. Step 6: Final answer
    x = 148,780.65

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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.