Home / 136,320.30-204,456.15-86,310.90

Finding the Fourth Proportional to 136,320.30, 204,456.15 and 86,310.90

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Solution

The fourth proportional to 136,320.30, 204,456.15 and 86,310.90 is: 129,450.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,320.30 : 204,456.15 = 86,310.90 : x
  2. Step 2: Convert to fraction form
    136,320.30/204,456.15 = 86,310.90/x
  3. Step 3: Cross multiply
    136,320.30x = 204,456.15 × 86,310.90
  4. Step 4: Simplify right side
    136,320.30x = 17,646,794,317.04
  5. Step 5: Solve for x
    x = 17,646,794,317.04/136,320.30
  6. Step 6: Final answer
    x = 129,450.96

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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.