Home / 82,463.46-123,865.56-78,869.76

Finding the Fourth Proportional to 82,463.46, 123,865.56 and 78,869.76

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Solution

The fourth proportional to 82,463.46, 123,865.56 and 78,869.76 is: 118,467.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,463.46 : 123,865.56 = 78,869.76 : x
  2. Step 2: Convert to fraction form
    82,463.46/123,865.56 = 78,869.76/x
  3. Step 3: Cross multiply
    82,463.46x = 123,865.56 × 78,869.76
  4. Step 4: Simplify right side
    82,463.46x = 9,769,246,989.47
  5. Step 5: Solve for x
    x = 9,769,246,989.47/82,463.46
  6. Step 6: Final answer
    x = 118,467.59

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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.