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Finding the Fourth Proportional to 168,261.40, 252,392.10 and 68,388.40

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Solution

The fourth proportional to 168,261.40, 252,392.10 and 68,388.40 is: 102,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,261.40 : 252,392.10 = 68,388.40 : x
  2. Step 2: Convert to fraction form
    168,261.40/252,392.10 = 68,388.40/x
  3. Step 3: Cross multiply
    168,261.40x = 252,392.10 × 68,388.40
  4. Step 4: Simplify right side
    168,261.40x = 17,260,691,891.64
  5. Step 5: Solve for x
    x = 17,260,691,891.64/168,261.40
  6. Step 6: Final answer
    x = 102,582.60

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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.