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Finding the Fourth Proportional to 135,745.05, 203,559.98 and 65,645.85

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Solution

The fourth proportional to 135,745.05, 203,559.98 and 65,645.85 is: 98,440.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,745.05 : 203,559.98 = 65,645.85 : x
  2. Step 2: Convert to fraction form
    135,745.05/203,559.98 = 65,645.85/x
  3. Step 3: Cross multiply
    135,745.05x = 203,559.98 × 65,645.85
  4. Step 4: Simplify right side
    135,745.05x = 13,362,867,584.85
  5. Step 5: Solve for x
    x = 13,362,867,584.85/135,745.05
  6. Step 6: Final answer
    x = 98,440.92

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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.