Home / 82,137.80-123,213.62-25,976.66

Finding the Fourth Proportional to 82,137.80, 123,213.62 and 25,976.66

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Solution

The fourth proportional to 82,137.80, 123,213.62 and 25,976.66 is: 38,967.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,137.80 : 123,213.62 = 25,976.66 : x
  2. Step 2: Convert to fraction form
    82,137.80/123,213.62 = 25,976.66/x
  3. Step 3: Cross multiply
    82,137.80x = 123,213.62 × 25,976.66
  4. Step 4: Simplify right side
    82,137.80x = 3,200,678,557.20
  5. Step 5: Solve for x
    x = 3,200,678,557.20/82,137.80
  6. Step 6: Final answer
    x = 38,967.18

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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.