Home / 203,858.91-305,667.22-77,508.40

Finding the Fourth Proportional to 203,858.91, 305,667.22 and 77,508.40

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Solution

The fourth proportional to 203,858.91, 305,667.22 and 77,508.40 is: 116,216.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,858.91 : 305,667.22 = 77,508.40 : x
  2. Step 2: Convert to fraction form
    203,858.91/305,667.22 = 77,508.40/x
  3. Step 3: Cross multiply
    203,858.91x = 305,667.22 × 77,508.40
  4. Step 4: Simplify right side
    203,858.91x = 23,691,777,375.33
  5. Step 5: Solve for x
    x = 23,691,777,375.33/203,858.91
  6. Step 6: Final answer
    x = 116,216.54

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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.