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Finding the Fourth Proportional to 100,520.37, 150,781.73 and 25,640.37

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Solution

The fourth proportional to 100,520.37, 150,781.73 and 25,640.37 is: 38,460.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,520.37 : 150,781.73 = 25,640.37 : x
  2. Step 2: Convert to fraction form
    100,520.37/150,781.73 = 25,640.37/x
  3. Step 3: Cross multiply
    100,520.37x = 150,781.73 × 25,640.37
  4. Step 4: Simplify right side
    100,520.37x = 3,866,099,218.24
  5. Step 5: Solve for x
    x = 3,866,099,218.24/100,520.37
  6. Step 6: Final answer
    x = 38,460.85

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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.