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Finding the Fourth Proportional to 82,732.80, 124,099.20 and 80,545.80

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Solution

The fourth proportional to 82,732.80, 124,099.20 and 80,545.80 is: 120,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,732.80 : 124,099.20 = 80,545.80 : x
  2. Step 2: Convert to fraction form
    82,732.80/124,099.20 = 80,545.80/x
  3. Step 3: Cross multiply
    82,732.80x = 124,099.20 × 80,545.80
  4. Step 4: Simplify right side
    82,732.80x = 9,995,669,343.36
  5. Step 5: Solve for x
    x = 9,995,669,343.36/82,732.80
  6. Step 6: Final answer
    x = 120,818.70

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1.5x scale

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.