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Finding the Fourth Proportional to 214,889.90, 321,891.87 and 125,873.54

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Solution

The fourth proportional to 214,889.90, 321,891.87 and 125,873.54 is: 188,550.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,889.90 : 321,891.87 = 125,873.54 : x
  2. Step 2: Convert to fraction form
    214,889.90/321,891.87 = 125,873.54/x
  3. Step 3: Cross multiply
    214,889.90x = 321,891.87 × 125,873.54
  4. Step 4: Simplify right side
    214,889.90x = 40,517,667,564.66
  5. Step 5: Solve for x
    x = 40,517,667,564.66/214,889.90
  6. Step 6: Final answer
    x = 188,550.82

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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.