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Finding the Fourth Proportional to 168,403.92, 252,473.46 and 84,120.60

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Solution

The fourth proportional to 168,403.92, 252,473.46 and 84,120.60 is: 126,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,403.92 : 252,473.46 = 84,120.60 : x
  2. Step 2: Convert to fraction form
    168,403.92/252,473.46 = 84,120.60/x
  3. Step 3: Cross multiply
    168,403.92x = 252,473.46 × 84,120.60
  4. Step 4: Simplify right side
    168,403.92x = 21,238,218,939.28
  5. Step 5: Solve for x
    x = 21,238,218,939.28/168,403.92
  6. Step 6: Final answer
    x = 126,114.75

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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.