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Finding the Fourth Proportional to 121,359.17, 167,481.41 and 67,644.63

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Solution

The fourth proportional to 121,359.17, 167,481.41 and 67,644.63 is: 93,352.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,359.17 : 167,481.41 = 67,644.63 : x
  2. Step 2: Convert to fraction form
    121,359.17/167,481.41 = 67,644.63/x
  3. Step 3: Cross multiply
    121,359.17x = 167,481.41 × 67,644.63
  4. Step 4: Simplify right side
    121,359.17x = 11,329,217,673.11
  5. Step 5: Solve for x
    x = 11,329,217,673.11/121,359.17
  6. Step 6: Final answer
    x = 93,352.79

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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.