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Finding the Fourth Proportional to 204,644.61, 307,158.89 and 125,912.61

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Solution

The fourth proportional to 204,644.61, 307,158.89 and 125,912.61 is: 188,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,644.61 : 307,158.89 = 125,912.61 : x
  2. Step 2: Convert to fraction form
    204,644.61/307,158.89 = 125,912.61/x
  3. Step 3: Cross multiply
    204,644.61x = 307,158.89 × 125,912.61
  4. Step 4: Simplify right side
    204,644.61x = 38,675,176,895.04
  5. Step 5: Solve for x
    x = 38,675,176,895.04/204,644.61
  6. Step 6: Final answer
    x = 188,987.03

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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.