Home / 217,115.10-325,672.65-76,887.90

Finding the Fourth Proportional to 217,115.10, 325,672.65 and 76,887.90

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Solution

The fourth proportional to 217,115.10, 325,672.65 and 76,887.90 is: 115,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,115.10 : 325,672.65 = 76,887.90 : x
  2. Step 2: Convert to fraction form
    217,115.10/325,672.65 = 76,887.90/x
  3. Step 3: Cross multiply
    217,115.10x = 325,672.65 × 76,887.90
  4. Step 4: Simplify right side
    217,115.10x = 25,040,286,145.94
  5. Step 5: Solve for x
    x = 25,040,286,145.94/217,115.10
  6. Step 6: Final answer
    x = 115,331.85

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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.