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Finding the Fourth Proportional to 136,771.91, 205,168.25 and 36,930.65

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Solution

The fourth proportional to 136,771.91, 205,168.25 and 36,930.65 is: 55,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,771.91 : 205,168.25 = 36,930.65 : x
  2. Step 2: Convert to fraction form
    136,771.91/205,168.25 = 36,930.65/x
  3. Step 3: Cross multiply
    136,771.91x = 205,168.25 × 36,930.65
  4. Step 4: Simplify right side
    136,771.91x = 7,576,997,160.13
  5. Step 5: Solve for x
    x = 7,576,997,160.13/136,771.91
  6. Step 6: Final answer
    x = 55,398.78

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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.