Home / 135,956.20-203,934.30-102,778.60

Finding the Fourth Proportional to 135,956.20, 203,934.30 and 102,778.60

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Solution

The fourth proportional to 135,956.20, 203,934.30 and 102,778.60 is: 154,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,956.20 : 203,934.30 = 102,778.60 : x
  2. Step 2: Convert to fraction form
    135,956.20/203,934.30 = 102,778.60/x
  3. Step 3: Cross multiply
    135,956.20x = 203,934.30 × 102,778.60
  4. Step 4: Simplify right side
    135,956.20x = 20,960,081,845.98
  5. Step 5: Solve for x
    x = 20,960,081,845.98/135,956.20
  6. Step 6: Final answer
    x = 154,167.90

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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.