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Finding the Fourth Proportional to 172,414.20, 258,621.30 and 113,316.60

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Solution

The fourth proportional to 172,414.20, 258,621.30 and 113,316.60 is: 169,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,414.20 : 258,621.30 = 113,316.60 : x
  2. Step 2: Convert to fraction form
    172,414.20/258,621.30 = 113,316.60/x
  3. Step 3: Cross multiply
    172,414.20x = 258,621.30 × 113,316.60
  4. Step 4: Simplify right side
    172,414.20x = 29,306,086,403.58
  5. Step 5: Solve for x
    x = 29,306,086,403.58/172,414.20
  6. Step 6: Final answer
    x = 169,974.90

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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.