Home / 204,908.18-307,288.44-86,588.78

Finding the Fourth Proportional to 204,908.18, 307,288.44 and 86,588.78

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Solution

The fourth proportional to 204,908.18, 307,288.44 and 86,588.78 is: 129,851.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,908.18 : 307,288.44 = 86,588.78 : x
  2. Step 2: Convert to fraction form
    204,908.18/307,288.44 = 86,588.78/x
  3. Step 3: Cross multiply
    204,908.18x = 307,288.44 × 86,588.78
  4. Step 4: Simplify right side
    204,908.18x = 26,607,729,591.26
  5. Step 5: Solve for x
    x = 26,607,729,591.26/204,908.18
  6. Step 6: Final answer
    x = 129,851.97

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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.