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Finding the Fourth Proportional to 225,883.62, 311,735.21 and 129,101.73

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Solution

The fourth proportional to 225,883.62, 311,735.21 and 129,101.73 is: 178,169.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,883.62 : 311,735.21 = 129,101.73 : x
  2. Step 2: Convert to fraction form
    225,883.62/311,735.21 = 129,101.73/x
  3. Step 3: Cross multiply
    225,883.62x = 311,735.21 × 129,101.73
  4. Step 4: Simplify right side
    225,883.62x = 40,245,554,267.40
  5. Step 5: Solve for x
    x = 40,245,554,267.40/225,883.62
  6. Step 6: Final answer
    x = 178,169.42

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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.