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Finding the Fourth Proportional to 145,255.80, 217,883.70 and 82,932.60

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Solution

The fourth proportional to 145,255.80, 217,883.70 and 82,932.60 is: 124,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,255.80 : 217,883.70 = 82,932.60 : x
  2. Step 2: Convert to fraction form
    145,255.80/217,883.70 = 82,932.60/x
  3. Step 3: Cross multiply
    145,255.80x = 217,883.70 × 82,932.60
  4. Step 4: Simplify right side
    145,255.80x = 18,069,661,738.62
  5. Step 5: Solve for x
    x = 18,069,661,738.62/145,255.80
  6. Step 6: Final answer
    x = 124,398.90

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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.