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Finding the Fourth Proportional to 192,680, 266,062.56 and 121,179.68

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Solution

The fourth proportional to 192,680, 266,062.56 and 121,179.68 is: 167,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,680 : 266,062.56 = 121,179.68 : x
  2. Step 2: Convert to fraction form
    192,680/266,062.56 = 121,179.68/x
  3. Step 3: Cross multiply
    192,680x = 266,062.56 × 121,179.68
  4. Step 4: Simplify right side
    192,680x = 32,241,375,880.78
  5. Step 5: Solve for x
    x = 32,241,375,880.78/192,680
  6. Step 6: Final answer
    x = 167,331.20

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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.