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Finding the Fourth Proportional to 171,872.66, 257,821.41 and 71,932.30

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Solution

The fourth proportional to 171,872.66, 257,821.41 and 71,932.30 is: 107,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,872.66 : 257,821.41 = 71,932.30 : x
  2. Step 2: Convert to fraction form
    171,872.66/257,821.41 = 71,932.30/x
  3. Step 3: Cross multiply
    171,872.66x = 257,821.41 × 71,932.30
  4. Step 4: Simplify right side
    171,872.66x = 18,545,687,010.54
  5. Step 5: Solve for x
    x = 18,545,687,010.54/171,872.66
  6. Step 6: Final answer
    x = 107,903.65

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1.5x scale

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.