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Finding the Fourth Proportional to 121,104, 167,123.52 and 68,112

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Solution

The fourth proportional to 121,104, 167,123.52 and 68,112 is: 93,994.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,104 : 167,123.52 = 68,112 : x
  2. Step 2: Convert to fraction form
    121,104/167,123.52 = 68,112/x
  3. Step 3: Cross multiply
    121,104x = 167,123.52 × 68,112
  4. Step 4: Simplify right side
    121,104x = 11,383,117,194.24
  5. Step 5: Solve for x
    x = 11,383,117,194.24/121,104
  6. Step 6: Final answer
    x = 93,994.56

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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.