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Finding the Fourth Proportional to 172,899.74, 259,287.18 and 73,067.64

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Solution

The fourth proportional to 172,899.74, 259,287.18 and 73,067.64 is: 109,575.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,899.74 : 259,287.18 = 73,067.64 : x
  2. Step 2: Convert to fraction form
    172,899.74/259,287.18 = 73,067.64/x
  3. Step 3: Cross multiply
    172,899.74x = 259,287.18 × 73,067.64
  4. Step 4: Simplify right side
    172,899.74x = 18,945,502,324.86
  5. Step 5: Solve for x
    x = 18,945,502,324.86/172,899.74
  6. Step 6: Final answer
    x = 109,575.08

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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.