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Finding the Fourth Proportional to 168,502.96, 252,753.72 and 68,640.88

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Solution

The fourth proportional to 168,502.96, 252,753.72 and 68,640.88 is: 102,961.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,502.96 : 252,753.72 = 68,640.88 : x
  2. Step 2: Convert to fraction form
    168,502.96/252,753.72 = 68,640.88/x
  3. Step 3: Cross multiply
    168,502.96x = 252,753.72 × 68,640.88
  4. Step 4: Simplify right side
    168,502.96x = 17,349,237,764.07
  5. Step 5: Solve for x
    x = 17,349,237,764.07/168,502.96
  6. Step 6: Final answer
    x = 102,961.03

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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.