Home / 87,372.38-120,788.75-86,573.16

Finding the Fourth Proportional to 87,372.38, 120,788.75 and 86,573.16

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Solution

The fourth proportional to 87,372.38, 120,788.75 and 86,573.16 is: 119,683.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,372.38 : 120,788.75 = 86,573.16 : x
  2. Step 2: Convert to fraction form
    87,372.38/120,788.75 = 86,573.16/x
  3. Step 3: Cross multiply
    87,372.38x = 120,788.75 × 86,573.16
  4. Step 4: Simplify right side
    87,372.38x = 10,457,063,996.38
  5. Step 5: Solve for x
    x = 10,457,063,996.38/87,372.38
  6. Step 6: Final answer
    x = 119,683.86

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1.5x scale

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.