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Finding the Fourth Proportional to 170,748.60, 256,122.90 and 82,175.10

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Solution

The fourth proportional to 170,748.60, 256,122.90 and 82,175.10 is: 123,262.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,748.60 : 256,122.90 = 82,175.10 : x
  2. Step 2: Convert to fraction form
    170,748.60/256,122.90 = 82,175.10/x
  3. Step 3: Cross multiply
    170,748.60x = 256,122.90 × 82,175.10
  4. Step 4: Simplify right side
    170,748.60x = 21,046,924,919.79
  5. Step 5: Solve for x
    x = 21,046,924,919.79/170,748.60
  6. Step 6: Final answer
    x = 123,262.65

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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.