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Finding the Fourth Proportional to 172,729.73, 259,103.88 and 54,410.33

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Solution

The fourth proportional to 172,729.73, 259,103.88 and 54,410.33 is: 81,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,729.73 : 259,103.88 = 54,410.33 : x
  2. Step 2: Convert to fraction form
    172,729.73/259,103.88 = 54,410.33/x
  3. Step 3: Cross multiply
    172,729.73x = 259,103.88 × 54,410.33
  4. Step 4: Simplify right side
    172,729.73x = 14,097,928,262.84
  5. Step 5: Solve for x
    x = 14,097,928,262.84/172,729.73
  6. Step 6: Final answer
    x = 81,618.42

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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.