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Finding the Fourth Proportional to 121,609.17, 167,815.26 and 67,892.94

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Solution

The fourth proportional to 121,609.17, 167,815.26 and 67,892.94 is: 93,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,609.17 : 167,815.26 = 67,892.94 : x
  2. Step 2: Convert to fraction form
    121,609.17/167,815.26 = 67,892.94/x
  3. Step 3: Cross multiply
    121,609.17x = 167,815.26 × 67,892.94
  4. Step 4: Simplify right side
    121,609.17x = 11,393,471,378.26
  5. Step 5: Solve for x
    x = 11,393,471,378.26/121,609.17
  6. Step 6: Final answer
    x = 93,689.25

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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.