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Finding the Fourth Proportional to 115,791.69, 159,771.78 and 68,054.61

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Solution

The fourth proportional to 115,791.69, 159,771.78 and 68,054.61 is: 93,903.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,791.69 : 159,771.78 = 68,054.61 : x
  2. Step 2: Convert to fraction form
    115,791.69/159,771.78 = 68,054.61/x
  3. Step 3: Cross multiply
    115,791.69x = 159,771.78 × 68,054.61
  4. Step 4: Simplify right side
    115,791.69x = 10,873,206,176.91
  5. Step 5: Solve for x
    x = 10,873,206,176.91/115,791.69
  6. Step 6: Final answer
    x = 93,903.17

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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.