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Finding the Fourth Proportional to 155,576.70, 214,698.60 and 91,914.48

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Solution

The fourth proportional to 155,576.70, 214,698.60 and 91,914.48 is: 126,843.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,576.70 : 214,698.60 = 91,914.48 : x
  2. Step 2: Convert to fraction form
    155,576.70/214,698.60 = 91,914.48/x
  3. Step 3: Cross multiply
    155,576.70x = 214,698.60 × 91,914.48
  4. Step 4: Simplify right side
    155,576.70x = 19,733,910,175.73
  5. Step 5: Solve for x
    x = 19,733,910,175.73/155,576.70
  6. Step 6: Final answer
    x = 126,843.61

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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.