Home / 102,956.20-154,319.10-43,781.80

Finding the Fourth Proportional to 102,956.20, 154,319.10 and 43,781.80

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Solution

The fourth proportional to 102,956.20, 154,319.10 and 43,781.80 is: 65,623.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,956.20 : 154,319.10 = 43,781.80 : x
  2. Step 2: Convert to fraction form
    102,956.20/154,319.10 = 43,781.80/x
  3. Step 3: Cross multiply
    102,956.20x = 154,319.10 × 43,781.80
  4. Step 4: Simplify right side
    102,956.20x = 6,756,367,972.38
  5. Step 5: Solve for x
    x = 6,756,367,972.38/102,956.20
  6. Step 6: Final answer
    x = 65,623.71

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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.