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Finding the Fourth Proportional to 172,872, 259,410.06 and 73,025.73

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Solution

The fourth proportional to 172,872, 259,410.06 and 73,025.73 is: 109,581.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,872 : 259,410.06 = 73,025.73 : x
  2. Step 2: Convert to fraction form
    172,872/259,410.06 = 73,025.73/x
  3. Step 3: Cross multiply
    172,872x = 259,410.06 × 73,025.73
  4. Step 4: Simplify right side
    172,872x = 18,943,609,000.84
  5. Step 5: Solve for x
    x = 18,943,609,000.84/172,872
  6. Step 6: Final answer
    x = 109,581.71

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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.