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Finding the Fourth Proportional to 133,418.69, 199,865.04 and 108,486.89

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Solution

The fourth proportional to 133,418.69, 199,865.04 and 108,486.89 is: 162,516.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,418.69 : 199,865.04 = 108,486.89 : x
  2. Step 2: Convert to fraction form
    133,418.69/199,865.04 = 108,486.89/x
  3. Step 3: Cross multiply
    133,418.69x = 199,865.04 × 108,486.89
  4. Step 4: Simplify right side
    133,418.69x = 21,682,736,609.33
  5. Step 5: Solve for x
    x = 21,682,736,609.33/133,418.69
  6. Step 6: Final answer
    x = 162,516.49

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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.