Home / 145,422.21-218,249.97-75,321.57

Finding the Fourth Proportional to 145,422.21, 218,249.97 and 75,321.57

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Solution

The fourth proportional to 145,422.21, 218,249.97 and 75,321.57 is: 113,042.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,422.21 : 218,249.97 = 75,321.57 : x
  2. Step 2: Convert to fraction form
    145,422.21/218,249.97 = 75,321.57/x
  3. Step 3: Cross multiply
    145,422.21x = 218,249.97 × 75,321.57
  4. Step 4: Simplify right side
    145,422.21x = 16,438,930,392.85
  5. Step 5: Solve for x
    x = 16,438,930,392.85/145,422.21
  6. Step 6: Final answer
    x = 113,042.78

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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.