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Finding the Fourth Proportional to 113,418.80, 170,144.40 and 38,542.40

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Solution

The fourth proportional to 113,418.80, 170,144.40 and 38,542.40 is: 57,819.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,418.80 : 170,144.40 = 38,542.40 : x
  2. Step 2: Convert to fraction form
    113,418.80/170,144.40 = 38,542.40/x
  3. Step 3: Cross multiply
    113,418.80x = 170,144.40 × 38,542.40
  4. Step 4: Simplify right side
    113,418.80x = 6,557,773,522.56
  5. Step 5: Solve for x
    x = 6,557,773,522.56/113,418.80
  6. Step 6: Final answer
    x = 57,819.11

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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.