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Finding the Fourth Proportional to 172,757.31, 238,218.62 and 108,203.55

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Solution

The fourth proportional to 172,757.31, 238,218.62 and 108,203.55 is: 149,204.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,757.31 : 238,218.62 = 108,203.55 : x
  2. Step 2: Convert to fraction form
    172,757.31/238,218.62 = 108,203.55/x
  3. Step 3: Cross multiply
    172,757.31x = 238,218.62 × 108,203.55
  4. Step 4: Simplify right side
    172,757.31x = 25,776,099,819.08
  5. Step 5: Solve for x
    x = 25,776,099,819.08/172,757.31
  6. Step 6: Final answer
    x = 149,204.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.