Home / 82,198.62-123,297.96-19,869.12

Finding the Fourth Proportional to 82,198.62, 123,297.96 and 19,869.12

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Solution

The fourth proportional to 82,198.62, 123,297.96 and 19,869.12 is: 29,803.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,198.62 : 123,297.96 = 19,869.12 : x
  2. Step 2: Convert to fraction form
    82,198.62/123,297.96 = 19,869.12/x
  3. Step 3: Cross multiply
    82,198.62x = 123,297.96 × 19,869.12
  4. Step 4: Simplify right side
    82,198.62x = 2,449,821,963.00
  5. Step 5: Solve for x
    x = 2,449,821,963.00/82,198.62
  6. Step 6: Final answer
    x = 29,803.69

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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.