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Finding the Fourth Proportional to 172,662.22, 258,992.96 and 54,343.90

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Solution

The fourth proportional to 172,662.22, 258,992.96 and 54,343.90 is: 81,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,662.22 : 258,992.96 = 54,343.90 : x
  2. Step 2: Convert to fraction form
    172,662.22/258,992.96 = 54,343.90/x
  3. Step 3: Cross multiply
    172,662.22x = 258,992.96 × 54,343.90
  4. Step 4: Simplify right side
    172,662.22x = 14,074,687,518.94
  5. Step 5: Solve for x
    x = 14,074,687,518.94/172,662.22
  6. Step 6: Final answer
    x = 81,515.73

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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.