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Finding the Fourth Proportional to 168,000.10, 251,654.55 and 84,940.90

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Solution

The fourth proportional to 168,000.10, 251,654.55 and 84,940.90 is: 127,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,000.10 : 251,654.55 = 84,940.90 : x
  2. Step 2: Convert to fraction form
    168,000.10/251,654.55 = 84,940.90/x
  3. Step 3: Cross multiply
    168,000.10x = 251,654.55 × 84,940.90
  4. Step 4: Simplify right side
    168,000.10x = 21,375,763,966.10
  5. Step 5: Solve for x
    x = 21,375,763,966.10/168,000.10
  6. Step 6: Final answer
    x = 127,236.61

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1.5x scale

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.