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Finding the Fourth Proportional to 126,625.41, 189,616.60 and 75,992.56

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Solution

The fourth proportional to 126,625.41, 189,616.60 and 75,992.56 is: 113,795.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,625.41 : 189,616.60 = 75,992.56 : x
  2. Step 2: Convert to fraction form
    126,625.41/189,616.60 = 75,992.56/x
  3. Step 3: Cross multiply
    126,625.41x = 189,616.60 × 75,992.56
  4. Step 4: Simplify right side
    126,625.41x = 14,409,450,568.44
  5. Step 5: Solve for x
    x = 14,409,450,568.44/126,625.41
  6. Step 6: Final answer
    x = 113,795.89

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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.