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Finding the Fourth Proportional to 225,881.90, 338,825.48 and 68,111.72

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Solution

The fourth proportional to 225,881.90, 338,825.48 and 68,111.72 is: 102,168.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,881.90 : 338,825.48 = 68,111.72 : x
  2. Step 2: Convert to fraction form
    225,881.90/338,825.48 = 68,111.72/x
  3. Step 3: Cross multiply
    225,881.90x = 338,825.48 × 68,111.72
  4. Step 4: Simplify right side
    225,881.90x = 23,077,984,187.94
  5. Step 5: Solve for x
    x = 23,077,984,187.94/225,881.90
  6. Step 6: Final answer
    x = 102,168.37

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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.