Home / 217,869.10-326,738.85-84,672.70

Finding the Fourth Proportional to 217,869.10, 326,738.85 and 84,672.70

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Solution

The fourth proportional to 217,869.10, 326,738.85 and 84,672.70 is: 126,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,869.10 : 326,738.85 = 84,672.70 : x
  2. Step 2: Convert to fraction form
    217,869.10/326,738.85 = 84,672.70/x
  3. Step 3: Cross multiply
    217,869.10x = 326,738.85 × 84,672.70
  4. Step 4: Simplify right side
    217,869.10x = 27,665,860,624.40
  5. Step 5: Solve for x
    x = 27,665,860,624.40/217,869.10
  6. Step 6: Final answer
    x = 126,983.87

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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.