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Finding the Fourth Proportional to 168,172.26, 252,215.40 and 49,815.90

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Solution

The fourth proportional to 168,172.26, 252,215.40 and 49,815.90 is: 74,711.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,172.26 : 252,215.40 = 49,815.90 : x
  2. Step 2: Convert to fraction form
    168,172.26/252,215.40 = 49,815.90/x
  3. Step 3: Cross multiply
    168,172.26x = 252,215.40 × 49,815.90
  4. Step 4: Simplify right side
    168,172.26x = 12,564,337,144.86
  5. Step 5: Solve for x
    x = 12,564,337,144.86/168,172.26
  6. Step 6: Final answer
    x = 74,711.12

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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.