Home / 87,974.80-131,962.20-84,864.40

Finding the Fourth Proportional to 87,974.80, 131,962.20 and 84,864.40

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Solution

The fourth proportional to 87,974.80, 131,962.20 and 84,864.40 is: 127,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,974.80 : 131,962.20 = 84,864.40 : x
  2. Step 2: Convert to fraction form
    87,974.80/131,962.20 = 84,864.40/x
  3. Step 3: Cross multiply
    87,974.80x = 131,962.20 × 84,864.40
  4. Step 4: Simplify right side
    87,974.80x = 11,198,892,925.68
  5. Step 5: Solve for x
    x = 11,198,892,925.68/87,974.80
  6. Step 6: Final answer
    x = 127,296.60

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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.