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Finding the Fourth Proportional to 201,745.20, 301,840.20 and 131,761.20

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Solution

The fourth proportional to 201,745.20, 301,840.20 and 131,761.20 is: 197,133.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,745.20 : 301,840.20 = 131,761.20 : x
  2. Step 2: Convert to fraction form
    201,745.20/301,840.20 = 131,761.20/x
  3. Step 3: Cross multiply
    201,745.20x = 301,840.20 × 131,761.20
  4. Step 4: Simplify right side
    201,745.20x = 39,770,826,960.24
  5. Step 5: Solve for x
    x = 39,770,826,960.24/201,745.20
  6. Step 6: Final answer
    x = 197,133.94

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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.