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Finding the Fourth Proportional to 121,673.78, 182,531.69 and 54,229.78

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Solution

The fourth proportional to 121,673.78, 182,531.69 and 54,229.78 is: 81,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,673.78 : 182,531.69 = 54,229.78 : x
  2. Step 2: Convert to fraction form
    121,673.78/182,531.69 = 54,229.78/x
  3. Step 3: Cross multiply
    121,673.78x = 182,531.69 × 54,229.78
  4. Step 4: Simplify right side
    121,673.78x = 9,898,653,391.73
  5. Step 5: Solve for x
    x = 9,898,653,391.73/121,673.78
  6. Step 6: Final answer
    x = 81,354.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.