Home / 168,531.12-252,811.20-43,872

Finding the Fourth Proportional to 168,531.12, 252,811.20 and 43,872

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Solution

The fourth proportional to 168,531.12, 252,811.20 and 43,872 is: 65,811.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,531.12 : 252,811.20 = 43,872 : x
  2. Step 2: Convert to fraction form
    168,531.12/252,811.20 = 43,872/x
  3. Step 3: Cross multiply
    168,531.12x = 252,811.20 × 43,872
  4. Step 4: Simplify right side
    168,531.12x = 11,091,332,966.40
  5. Step 5: Solve for x
    x = 11,091,332,966.40/168,531.12
  6. Step 6: Final answer
    x = 65,811.78

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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.