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Finding the Fourth Proportional to 168,769.80, 252,863.10 and 79,831.80

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Solution

The fourth proportional to 168,769.80, 252,863.10 and 79,831.80 is: 119,609.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,769.80 : 252,863.10 = 79,831.80 : x
  2. Step 2: Convert to fraction form
    168,769.80/252,863.10 = 79,831.80/x
  3. Step 3: Cross multiply
    168,769.80x = 252,863.10 × 79,831.80
  4. Step 4: Simplify right side
    168,769.80x = 20,186,516,426.58
  5. Step 5: Solve for x
    x = 20,186,516,426.58/168,769.80
  6. Step 6: Final answer
    x = 119,609.77

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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.