Home / 171,286.78-257,003.64-66,179.56

Finding the Fourth Proportional to 171,286.78, 257,003.64 and 66,179.56

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Solution

The fourth proportional to 171,286.78, 257,003.64 and 66,179.56 is: 99,297.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,286.78 : 257,003.64 = 66,179.56 : x
  2. Step 2: Convert to fraction form
    171,286.78/257,003.64 = 66,179.56/x
  3. Step 3: Cross multiply
    171,286.78x = 257,003.64 × 66,179.56
  4. Step 4: Simplify right side
    171,286.78x = 17,008,387,813.60
  5. Step 5: Solve for x
    x = 17,008,387,813.60/171,286.78
  6. Step 6: Final answer
    x = 99,297.73

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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.