Home / 121,959.93-182,939.89-80,397.21

Finding the Fourth Proportional to 121,959.93, 182,939.89 and 80,397.21

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Solution

The fourth proportional to 121,959.93, 182,939.89 and 80,397.21 is: 120,595.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,959.93 : 182,939.89 = 80,397.21 : x
  2. Step 2: Convert to fraction form
    121,959.93/182,939.89 = 80,397.21/x
  3. Step 3: Cross multiply
    121,959.93x = 182,939.89 × 80,397.21
  4. Step 4: Simplify right side
    121,959.93x = 14,707,856,753.71
  5. Step 5: Solve for x
    x = 14,707,856,753.71/121,959.93
  6. Step 6: Final answer
    x = 120,595.81

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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.