Home / 115,357.20-159,194.88-65,057.28

Finding the Fourth Proportional to 115,357.20, 159,194.88 and 65,057.28

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Solution

The fourth proportional to 115,357.20, 159,194.88 and 65,057.28 is: 89,780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,357.20 : 159,194.88 = 65,057.28 : x
  2. Step 2: Convert to fraction form
    115,357.20/159,194.88 = 65,057.28/x
  3. Step 3: Cross multiply
    115,357.20x = 159,194.88 × 65,057.28
  4. Step 4: Simplify right side
    115,357.20x = 10,356,785,882.73
  5. Step 5: Solve for x
    x = 10,356,785,882.73/115,357.20
  6. Step 6: Final answer
    x = 89,780.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.