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Finding the Fourth Proportional to 150,644.20, 207,879.78 and 82,647.40

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Solution

The fourth proportional to 150,644.20, 207,879.78 and 82,647.40 is: 114,048.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,644.20 : 207,879.78 = 82,647.40 : x
  2. Step 2: Convert to fraction form
    150,644.20/207,879.78 = 82,647.40/x
  3. Step 3: Cross multiply
    150,644.20x = 207,879.78 × 82,647.40
  4. Step 4: Simplify right side
    150,644.20x = 17,180,723,329.57
  5. Step 5: Solve for x
    x = 17,180,723,329.57/150,644.20
  6. Step 6: Final answer
    x = 114,048.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.