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Finding the Fourth Proportional to 201,144.44, 277,540.05 and 115,129.73

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Solution

The fourth proportional to 201,144.44, 277,540.05 and 115,129.73 is: 158,856.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,144.44 : 277,540.05 = 115,129.73 : x
  2. Step 2: Convert to fraction form
    201,144.44/277,540.05 = 115,129.73/x
  3. Step 3: Cross multiply
    201,144.44x = 277,540.05 × 115,129.73
  4. Step 4: Simplify right side
    201,144.44x = 31,953,111,020.69
  5. Step 5: Solve for x
    x = 31,953,111,020.69/201,144.44
  6. Step 6: Final answer
    x = 158,856.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.