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Finding the Fourth Proportional to 170,899.97, 256,183.34 and 68,286.72

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Solution

The fourth proportional to 170,899.97, 256,183.34 and 68,286.72 is: 102,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,899.97 : 256,183.34 = 68,286.72 : x
  2. Step 2: Convert to fraction form
    170,899.97/256,183.34 = 68,286.72/x
  3. Step 3: Cross multiply
    170,899.97x = 256,183.34 × 68,286.72
  4. Step 4: Simplify right side
    170,899.97x = 17,493,919,665.81
  5. Step 5: Solve for x
    x = 17,493,919,665.81/170,899.97
  6. Step 6: Final answer
    x = 102,363.51

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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.