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Finding the Fourth Proportional to 68,089.60, 102,134.41 and 18,169.88

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Solution

The fourth proportional to 68,089.60, 102,134.41 and 18,169.88 is: 27,254.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,089.60 : 102,134.41 = 18,169.88 : x
  2. Step 2: Convert to fraction form
    68,089.60/102,134.41 = 18,169.88/x
  3. Step 3: Cross multiply
    68,089.60x = 102,134.41 × 18,169.88
  4. Step 4: Simplify right side
    68,089.60x = 1,855,770,183.48
  5. Step 5: Solve for x
    x = 1,855,770,183.48/68,089.60
  6. Step 6: Final answer
    x = 27,254.83

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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.