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Finding the Fourth Proportional to 121,495.78, 167,667.47 and 67,791.25

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Solution

The fourth proportional to 121,495.78, 167,667.47 and 67,791.25 is: 93,553.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,495.78 : 167,667.47 = 67,791.25 : x
  2. Step 2: Convert to fraction form
    121,495.78/167,667.47 = 67,791.25/x
  3. Step 3: Cross multiply
    121,495.78x = 167,667.47 × 67,791.25
  4. Step 4: Simplify right side
    121,495.78x = 11,366,387,375.64
  5. Step 5: Solve for x
    x = 11,366,387,375.64/121,495.78
  6. Step 6: Final answer
    x = 93,553.76

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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.