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Finding the Fourth Proportional to 100,640.20, 150,960.30 and 41,456.20

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Solution

The fourth proportional to 100,640.20, 150,960.30 and 41,456.20 is: 62,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,640.20 : 150,960.30 = 41,456.20 : x
  2. Step 2: Convert to fraction form
    100,640.20/150,960.30 = 41,456.20/x
  3. Step 3: Cross multiply
    100,640.20x = 150,960.30 × 41,456.20
  4. Step 4: Simplify right side
    100,640.20x = 6,258,240,388.86
  5. Step 5: Solve for x
    x = 6,258,240,388.86/100,640.20
  6. Step 6: Final answer
    x = 62,184.30

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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.