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Finding the Fourth Proportional to 172,694.60, 259,100.72 and 105,361.44

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Solution

The fourth proportional to 172,694.60, 259,100.72 and 105,361.44 is: 158,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,694.60 : 259,100.72 = 105,361.44 : x
  2. Step 2: Convert to fraction form
    172,694.60/259,100.72 = 105,361.44/x
  3. Step 3: Cross multiply
    172,694.60x = 259,100.72 × 105,361.44
  4. Step 4: Simplify right side
    172,694.60x = 27,299,224,964.24
  5. Step 5: Solve for x
    x = 27,299,224,964.24/172,694.60
  6. Step 6: Final answer
    x = 158,078.05

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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.