Home / 115,789.16-159,738.31-68,020.96

Finding the Fourth Proportional to 115,789.16, 159,738.31 and 68,020.96

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Solution

The fourth proportional to 115,789.16, 159,738.31 and 68,020.96 is: 93,839.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,789.16 : 159,738.31 = 68,020.96 : x
  2. Step 2: Convert to fraction form
    115,789.16/159,738.31 = 68,020.96/x
  3. Step 3: Cross multiply
    115,789.16x = 159,738.31 × 68,020.96
  4. Step 4: Simplify right side
    115,789.16x = 10,865,553,194.98
  5. Step 5: Solve for x
    x = 10,865,553,194.98/115,789.16
  6. Step 6: Final answer
    x = 93,839.12

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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.