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Finding the Fourth Proportional to 137,791.72, 206,733.60 and 53,554.63

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Solution

The fourth proportional to 137,791.72, 206,733.60 and 53,554.63 is: 80,349.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,791.72 : 206,733.60 = 53,554.63 : x
  2. Step 2: Convert to fraction form
    137,791.72/206,733.60 = 53,554.63/x
  3. Step 3: Cross multiply
    137,791.72x = 206,733.60 × 53,554.63
  4. Step 4: Simplify right side
    137,791.72x = 11,071,541,456.57
  5. Step 5: Solve for x
    x = 11,071,541,456.57/137,791.72
  6. Step 6: Final answer
    x = 80,349.83

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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.