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Finding the Fourth Proportional to 129,961.20, 195,028.20 and 73,801.20

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Solution

The fourth proportional to 129,961.20, 195,028.20 and 73,801.20 is: 110,750.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,961.20 : 195,028.20 = 73,801.20 : x
  2. Step 2: Convert to fraction form
    129,961.20/195,028.20 = 73,801.20/x
  3. Step 3: Cross multiply
    129,961.20x = 195,028.20 × 73,801.20
  4. Step 4: Simplify right side
    129,961.20x = 14,393,315,193.84
  5. Step 5: Solve for x
    x = 14,393,315,193.84/129,961.20
  6. Step 6: Final answer
    x = 110,750.86

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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.