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Finding the Fourth Proportional to 100,388.88, 150,579 and 25,512.12

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Solution

The fourth proportional to 100,388.88, 150,579 and 25,512.12 is: 38,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,388.88 : 150,579 = 25,512.12 : x
  2. Step 2: Convert to fraction form
    100,388.88/150,579 = 25,512.12/x
  3. Step 3: Cross multiply
    100,388.88x = 150,579 × 25,512.12
  4. Step 4: Simplify right side
    100,388.88x = 3,841,589,517.48
  5. Step 5: Solve for x
    x = 3,841,589,517.48/100,388.88
  6. Step 6: Final answer
    x = 38,267.08

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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.