Home / 216,546.32-324,874.83-90,144.54

Finding the Fourth Proportional to 216,546.32, 324,874.83 and 90,144.54

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Solution

The fourth proportional to 216,546.32, 324,874.83 and 90,144.54 is: 135,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,546.32 : 324,874.83 = 90,144.54 : x
  2. Step 2: Convert to fraction form
    216,546.32/324,874.83 = 90,144.54/x
  3. Step 3: Cross multiply
    216,546.32x = 324,874.83 × 90,144.54
  4. Step 4: Simplify right side
    216,546.32x = 29,285,692,107.93
  5. Step 5: Solve for x
    x = 29,285,692,107.93/216,546.32
  6. Step 6: Final answer
    x = 135,239.85

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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.