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Finding the Fourth Proportional to 121,337.87, 167,446.51 and 67,621.80

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Solution

The fourth proportional to 121,337.87, 167,446.51 and 67,621.80 is: 93,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,337.87 : 167,446.51 = 67,621.80 : x
  2. Step 2: Convert to fraction form
    121,337.87/167,446.51 = 67,621.80/x
  3. Step 3: Cross multiply
    121,337.87x = 167,446.51 × 67,621.80
  4. Step 4: Simplify right side
    121,337.87x = 11,323,034,868.79
  5. Step 5: Solve for x
    x = 11,323,034,868.79/121,337.87
  6. Step 6: Final answer
    x = 93,318.23

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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.