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Finding the Fourth Proportional to 172,986.92, 259,515.39 and 73,146.95

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Solution

The fourth proportional to 172,986.92, 259,515.39 and 73,146.95 is: 109,735.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,986.92 : 259,515.39 = 73,146.95 : x
  2. Step 2: Convert to fraction form
    172,986.92/259,515.39 = 73,146.95/x
  3. Step 3: Cross multiply
    172,986.92x = 259,515.39 × 73,146.95
  4. Step 4: Simplify right side
    172,986.92x = 18,982,759,256.56
  5. Step 5: Solve for x
    x = 18,982,759,256.56/172,986.92
  6. Step 6: Final answer
    x = 109,735.23

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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.