Home / 102,469.72-141,407.92-57,147.76

Finding the Fourth Proportional to 102,469.72, 141,407.92 and 57,147.76

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Solution

The fourth proportional to 102,469.72, 141,407.92 and 57,147.76 is: 78,863.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,469.72 : 141,407.92 = 57,147.76 : x
  2. Step 2: Convert to fraction form
    102,469.72/141,407.92 = 57,147.76/x
  3. Step 3: Cross multiply
    102,469.72x = 141,407.92 × 57,147.76
  4. Step 4: Simplify right side
    102,469.72x = 8,081,145,874.26
  5. Step 5: Solve for x
    x = 8,081,145,874.26/102,469.72
  6. Step 6: Final answer
    x = 78,863.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.