Home / 321,123.62-481,753.02-121,439.54

Finding the Fourth Proportional to 321,123.62, 481,753.02 and 121,439.54

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Solution

The fourth proportional to 321,123.62, 481,753.02 and 121,439.54 is: 182,184.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,123.62 : 481,753.02 = 121,439.54 : x
  2. Step 2: Convert to fraction form
    321,123.62/481,753.02 = 121,439.54/x
  3. Step 3: Cross multiply
    321,123.62x = 481,753.02 × 121,439.54
  4. Step 4: Simplify right side
    321,123.62x = 58,503,865,142.41
  5. Step 5: Solve for x
    x = 58,503,865,142.41/321,123.62
  6. Step 6: Final answer
    x = 182,184.87

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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.