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Finding the Fourth Proportional to 172,968.84, 259,464.18 and 73,115.88

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Solution

The fourth proportional to 172,968.84, 259,464.18 and 73,115.88 is: 109,678.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,968.84 : 259,464.18 = 73,115.88 : x
  2. Step 2: Convert to fraction form
    172,968.84/259,464.18 = 73,115.88/x
  3. Step 3: Cross multiply
    172,968.84x = 259,464.18 × 73,115.88
  4. Step 4: Simplify right side
    172,968.84x = 18,970,951,849.18
  5. Step 5: Solve for x
    x = 18,970,951,849.18/172,968.84
  6. Step 6: Final answer
    x = 109,678.44

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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.