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Finding the Fourth Proportional to 137,855.06, 206,781.84 and 53,673.79

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Solution

The fourth proportional to 137,855.06, 206,781.84 and 53,673.79 is: 80,510.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,855.06 : 206,781.84 = 53,673.79 : x
  2. Step 2: Convert to fraction form
    137,855.06/206,781.84 = 53,673.79/x
  3. Step 3: Cross multiply
    137,855.06x = 206,781.84 × 53,673.79
  4. Step 4: Simplify right side
    137,855.06x = 11,098,764,775.78
  5. Step 5: Solve for x
    x = 11,098,764,775.78/137,855.06
  6. Step 6: Final answer
    x = 80,510.39

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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.