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Finding the Fourth Proportional to 168,478.92, 252,569.46 and 68,722.56

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Solution

The fourth proportional to 168,478.92, 252,569.46 and 68,722.56 is: 103,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,478.92 : 252,569.46 = 68,722.56 : x
  2. Step 2: Convert to fraction form
    168,478.92/252,569.46 = 68,722.56/x
  3. Step 3: Cross multiply
    168,478.92x = 252,569.46 × 68,722.56
  4. Step 4: Simplify right side
    168,478.92x = 17,357,219,869.02
  5. Step 5: Solve for x
    x = 17,357,219,869.02/168,478.92
  6. Step 6: Final answer
    x = 103,023.10

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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.