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Finding the Fourth Proportional to 100,171.80, 150,201.54 and 68,617.49

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Solution

The fourth proportional to 100,171.80, 150,201.54 and 68,617.49 is: 102,887.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,171.80 : 150,201.54 = 68,617.49 : x
  2. Step 2: Convert to fraction form
    100,171.80/150,201.54 = 68,617.49/x
  3. Step 3: Cross multiply
    100,171.80x = 150,201.54 × 68,617.49
  4. Step 4: Simplify right side
    100,171.80x = 10,306,451,917.93
  5. Step 5: Solve for x
    x = 10,306,451,917.93/100,171.80
  6. Step 6: Final answer
    x = 102,887.76

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1.5x scale

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.