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Finding the Fourth Proportional to 100,251.78, 150,450.51 and 80,765.70

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Solution

The fourth proportional to 100,251.78, 150,450.51 and 80,765.70 is: 121,207.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,251.78 : 150,450.51 = 80,765.70 : x
  2. Step 2: Convert to fraction form
    100,251.78/150,450.51 = 80,765.70/x
  3. Step 3: Cross multiply
    100,251.78x = 150,450.51 × 80,765.70
  4. Step 4: Simplify right side
    100,251.78x = 12,151,240,755.51
  5. Step 5: Solve for x
    x = 12,151,240,755.51/100,251.78
  6. Step 6: Final answer
    x = 121,207.23

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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.