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Finding the Fourth Proportional to 171,354.48, 258,201.78 and 140,872.56

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Solution

The fourth proportional to 171,354.48, 258,201.78 and 140,872.56 is: 212,270.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,354.48 : 258,201.78 = 140,872.56 : x
  2. Step 2: Convert to fraction form
    171,354.48/258,201.78 = 140,872.56/x
  3. Step 3: Cross multiply
    171,354.48x = 258,201.78 × 140,872.56
  4. Step 4: Simplify right side
    171,354.48x = 36,373,545,745.16
  5. Step 5: Solve for x
    x = 36,373,545,745.16/171,354.48
  6. Step 6: Final answer
    x = 212,270.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.