Home / 87,669.60-131,504.40-86,211.60

Finding the Fourth Proportional to 87,669.60, 131,504.40 and 86,211.60

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Solution

The fourth proportional to 87,669.60, 131,504.40 and 86,211.60 is: 129,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,669.60 : 131,504.40 = 86,211.60 : x
  2. Step 2: Convert to fraction form
    87,669.60/131,504.40 = 86,211.60/x
  3. Step 3: Cross multiply
    87,669.60x = 131,504.40 × 86,211.60
  4. Step 4: Simplify right side
    87,669.60x = 11,337,204,731.04
  5. Step 5: Solve for x
    x = 11,337,204,731.04/87,669.60
  6. Step 6: Final answer
    x = 129,317.40

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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.