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Finding the Fourth Proportional to 168,257.30, 252,434.80 and 54,402.66

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Solution

The fourth proportional to 168,257.30, 252,434.80 and 54,402.66 is: 81,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,257.30 : 252,434.80 = 54,402.66 : x
  2. Step 2: Convert to fraction form
    168,257.30/252,434.80 = 54,402.66/x
  3. Step 3: Cross multiply
    168,257.30x = 252,434.80 × 54,402.66
  4. Step 4: Simplify right side
    168,257.30x = 13,733,124,596.57
  5. Step 5: Solve for x
    x = 13,733,124,596.57/168,257.30
  6. Step 6: Final answer
    x = 81,619.78

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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.