Home / 115,738.56-159,721.92-65,437.92

Finding the Fourth Proportional to 115,738.56, 159,721.92 and 65,437.92

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Solution

The fourth proportional to 115,738.56, 159,721.92 and 65,437.92 is: 90,305.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,738.56 : 159,721.92 = 65,437.92 : x
  2. Step 2: Convert to fraction form
    115,738.56/159,721.92 = 65,437.92/x
  3. Step 3: Cross multiply
    115,738.56x = 159,721.92 × 65,437.92
  4. Step 4: Simplify right side
    115,738.56x = 10,451,870,223.21
  5. Step 5: Solve for x
    x = 10,451,870,223.21/115,738.56
  6. Step 6: Final answer
    x = 90,305.86

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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.