Home / 204,905.28-307,389.76-86,577.20

Finding the Fourth Proportional to 204,905.28, 307,389.76 and 86,577.20

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Solution

The fourth proportional to 204,905.28, 307,389.76 and 86,577.20 is: 129,879.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,905.28 : 307,389.76 = 86,577.20 : x
  2. Step 2: Convert to fraction form
    204,905.28/307,389.76 = 86,577.20/x
  3. Step 3: Cross multiply
    204,905.28x = 307,389.76 × 86,577.20
  4. Step 4: Simplify right side
    204,905.28x = 26,612,944,729.47
  5. Step 5: Solve for x
    x = 26,612,944,729.47/204,905.28
  6. Step 6: Final answer
    x = 129,879.25

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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.