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Finding the Fourth Proportional to 121,568.48, 167,757.65 and 67,856.94

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Solution

The fourth proportional to 121,568.48, 167,757.65 and 67,856.94 is: 93,638.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,568.48 : 167,757.65 = 67,856.94 : x
  2. Step 2: Convert to fraction form
    121,568.48/167,757.65 = 67,856.94/x
  3. Step 3: Cross multiply
    121,568.48x = 167,757.65 × 67,856.94
  4. Step 4: Simplify right side
    121,568.48x = 11,383,520,960.23
  5. Step 5: Solve for x
    x = 11,383,520,960.23/121,568.48
  6. Step 6: Final answer
    x = 93,638.76

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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.