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Finding the Fourth Proportional to 121,481.56, 167,643.38 and 67,034.20

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Solution

The fourth proportional to 121,481.56, 167,643.38 and 67,034.20 is: 92,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,481.56 : 167,643.38 = 67,034.20 : x
  2. Step 2: Convert to fraction form
    121,481.56/167,643.38 = 67,034.20/x
  3. Step 3: Cross multiply
    121,481.56x = 167,643.38 × 67,034.20
  4. Step 4: Simplify right side
    121,481.56x = 11,237,839,863.60
  5. Step 5: Solve for x
    x = 11,237,839,863.60/121,481.56
  6. Step 6: Final answer
    x = 92,506.55

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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.