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Finding the Fourth Proportional to 203,900.67, 305,682.60 and 89,967.36

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Solution

The fourth proportional to 203,900.67, 305,682.60 and 89,967.36 is: 134,876.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,900.67 : 305,682.60 = 89,967.36 : x
  2. Step 2: Convert to fraction form
    203,900.67/305,682.60 = 89,967.36/x
  3. Step 3: Cross multiply
    203,900.67x = 305,682.60 × 89,967.36
  4. Step 4: Simplify right side
    203,900.67x = 27,501,456,519.94
  5. Step 5: Solve for x
    x = 27,501,456,519.94/203,900.67
  6. Step 6: Final answer
    x = 134,876.73

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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.