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Finding the Fourth Proportional to 168,660.50, 252,990.72 and 68,867.69

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Solution

The fourth proportional to 168,660.50, 252,990.72 and 68,867.69 is: 103,301.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,660.50 : 252,990.72 = 68,867.69 : x
  2. Step 2: Convert to fraction form
    168,660.50/252,990.72 = 68,867.69/x
  3. Step 3: Cross multiply
    168,660.50x = 252,990.72 × 68,867.69
  4. Step 4: Simplify right side
    168,660.50x = 17,422,885,212.88
  5. Step 5: Solve for x
    x = 17,422,885,212.88/168,660.50
  6. Step 6: Final answer
    x = 103,301.52

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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.