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Finding the Fourth Proportional to 168,391.20, 252,621.90 and 56,106.30

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Solution

The fourth proportional to 168,391.20, 252,621.90 and 56,106.30 is: 84,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,391.20 : 252,621.90 = 56,106.30 : x
  2. Step 2: Convert to fraction form
    168,391.20/252,621.90 = 56,106.30/x
  3. Step 3: Cross multiply
    168,391.20x = 252,621.90 × 56,106.30
  4. Step 4: Simplify right side
    168,391.20x = 14,173,680,107.97
  5. Step 5: Solve for x
    x = 14,173,680,107.97/168,391.20
  6. Step 6: Final answer
    x = 84,171.14

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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.