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Finding the Fourth Proportional to 139,480.20, 192,481.48 and 75,817.80

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Solution

The fourth proportional to 139,480.20, 192,481.48 and 75,817.80 is: 104,627.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,480.20 : 192,481.48 = 75,817.80 : x
  2. Step 2: Convert to fraction form
    139,480.20/192,481.48 = 75,817.80/x
  3. Step 3: Cross multiply
    139,480.20x = 192,481.48 × 75,817.80
  4. Step 4: Simplify right side
    139,480.20x = 14,593,522,354.34
  5. Step 5: Solve for x
    x = 14,593,522,354.34/139,480.20
  6. Step 6: Final answer
    x = 104,627.91

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1.5x scale

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.