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Finding the Fourth Proportional to 171,650.80, 257,476.20 and 108,665.20

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Solution

The fourth proportional to 171,650.80, 257,476.20 and 108,665.20 is: 162,997.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,650.80 : 257,476.20 = 108,665.20 : x
  2. Step 2: Convert to fraction form
    171,650.80/257,476.20 = 108,665.20/x
  3. Step 3: Cross multiply
    171,650.80x = 257,476.20 × 108,665.20
  4. Step 4: Simplify right side
    171,650.80x = 27,978,702,768.24
  5. Step 5: Solve for x
    x = 27,978,702,768.24/171,650.80
  6. Step 6: Final answer
    x = 162,997.80

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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.