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Finding the Fourth Proportional to 203,601.54, 281,003.85 and 112,986.61

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Solution

The fourth proportional to 203,601.54, 281,003.85 and 112,986.61 is: 155,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,601.54 : 281,003.85 = 112,986.61 : x
  2. Step 2: Convert to fraction form
    203,601.54/281,003.85 = 112,986.61/x
  3. Step 3: Cross multiply
    203,601.54x = 281,003.85 × 112,986.61
  4. Step 4: Simplify right side
    203,601.54x = 31,749,672,408.45
  5. Step 5: Solve for x
    x = 31,749,672,408.45/203,601.54
  6. Step 6: Final answer
    x = 155,940.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.