Home / 204,920.92-307,370.22-78,621.76

Finding the Fourth Proportional to 204,920.92, 307,370.22 and 78,621.76

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Solution

The fourth proportional to 204,920.92, 307,370.22 and 78,621.76 is: 117,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,920.92 : 307,370.22 = 78,621.76 : x
  2. Step 2: Convert to fraction form
    204,920.92/307,370.22 = 78,621.76/x
  3. Step 3: Cross multiply
    204,920.92x = 307,370.22 × 78,621.76
  4. Step 4: Simplify right side
    204,920.92x = 24,165,987,667.99
  5. Step 5: Solve for x
    x = 24,165,987,667.99/204,920.92
  6. Step 6: Final answer
    x = 117,928.36

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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.