Home / 80,998.20-121,497.30-57,151.80

Finding the Fourth Proportional to 80,998.20, 121,497.30 and 57,151.80

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Solution

The fourth proportional to 80,998.20, 121,497.30 and 57,151.80 is: 85,727.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,998.20 : 121,497.30 = 57,151.80 : x
  2. Step 2: Convert to fraction form
    80,998.20/121,497.30 = 57,151.80/x
  3. Step 3: Cross multiply
    80,998.20x = 121,497.30 × 57,151.80
  4. Step 4: Simplify right side
    80,998.20x = 6,943,789,390.14
  5. Step 5: Solve for x
    x = 6,943,789,390.14/80,998.20
  6. Step 6: Final answer
    x = 85,727.70

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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.