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Finding the Fourth Proportional to 135,709.56, 187,286.58 and 88,003.80

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Solution

The fourth proportional to 135,709.56, 187,286.58 and 88,003.80 is: 121,450.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,709.56 : 187,286.58 = 88,003.80 : x
  2. Step 2: Convert to fraction form
    135,709.56/187,286.58 = 88,003.80/x
  3. Step 3: Cross multiply
    135,709.56x = 187,286.58 × 88,003.80
  4. Step 4: Simplify right side
    135,709.56x = 16,481,930,729.00
  5. Step 5: Solve for x
    x = 16,481,930,729.00/135,709.56
  6. Step 6: Final answer
    x = 121,450.03

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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.