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Finding the Fourth Proportional to 168,491.43, 252,612.41 and 79,641.18

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Solution

The fourth proportional to 168,491.43, 252,612.41 and 79,641.18 is: 119,402.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,491.43 : 252,612.41 = 79,641.18 : x
  2. Step 2: Convert to fraction form
    168,491.43/252,612.41 = 79,641.18/x
  3. Step 3: Cross multiply
    168,491.43x = 252,612.41 × 79,641.18
  4. Step 4: Simplify right side
    168,491.43x = 20,118,350,016.84
  5. Step 5: Solve for x
    x = 20,118,350,016.84/168,491.43
  6. Step 6: Final answer
    x = 119,402.81

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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.