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Finding the Fourth Proportional to 172,981.54, 259,490.77 and 73,151.83

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Solution

The fourth proportional to 172,981.54, 259,490.77 and 73,151.83 is: 109,735.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,981.54 : 259,490.77 = 73,151.83 : x
  2. Step 2: Convert to fraction form
    172,981.54/259,490.77 = 73,151.83/x
  3. Step 3: Cross multiply
    172,981.54x = 259,490.77 × 73,151.83
  4. Step 4: Simplify right side
    172,981.54x = 18,982,223,786.94
  5. Step 5: Solve for x
    x = 18,982,223,786.94/172,981.54
  6. Step 6: Final answer
    x = 109,735.55

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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.