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Finding the Fourth Proportional to 121,554.47, 167,756.82 and 67,844.48

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Solution

The fourth proportional to 121,554.47, 167,756.82 and 67,844.48 is: 93,631.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,554.47 : 167,756.82 = 67,844.48 : x
  2. Step 2: Convert to fraction form
    121,554.47/167,756.82 = 67,844.48/x
  3. Step 3: Cross multiply
    121,554.47x = 167,756.82 × 67,844.48
  4. Step 4: Simplify right side
    121,554.47x = 11,381,373,380.57
  5. Step 5: Solve for x
    x = 11,381,373,380.57/121,554.47
  6. Step 6: Final answer
    x = 93,631.88

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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.