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Finding the Fourth Proportional to 172,805.44, 259,244.34 and 72,965.92

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Solution

The fourth proportional to 172,805.44, 259,244.34 and 72,965.92 is: 109,464.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,805.44 : 259,244.34 = 72,965.92 : x
  2. Step 2: Convert to fraction form
    172,805.44/259,244.34 = 72,965.92/x
  3. Step 3: Cross multiply
    172,805.44x = 259,244.34 × 72,965.92
  4. Step 4: Simplify right side
    172,805.44x = 18,916,001,772.89
  5. Step 5: Solve for x
    x = 18,916,001,772.89/172,805.44
  6. Step 6: Final answer
    x = 109,464.16

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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.