Home / 87,845.30-131,899.18-86,533.10

Finding the Fourth Proportional to 87,845.30, 131,899.18 and 86,533.10

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Solution

The fourth proportional to 87,845.30, 131,899.18 and 86,533.10 is: 129,928.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,845.30 : 131,899.18 = 86,533.10 : x
  2. Step 2: Convert to fraction form
    87,845.30/131,899.18 = 86,533.10/x
  3. Step 3: Cross multiply
    87,845.30x = 131,899.18 × 86,533.10
  4. Step 4: Simplify right side
    87,845.30x = 11,413,644,932.86
  5. Step 5: Solve for x
    x = 11,413,644,932.86/87,845.30
  6. Step 6: Final answer
    x = 129,928.92

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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.