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Finding the Fourth Proportional to 171,001.88, 256,507.20 and 81,023.48

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Solution

The fourth proportional to 171,001.88, 256,507.20 and 81,023.48 is: 121,537.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,001.88 : 256,507.20 = 81,023.48 : x
  2. Step 2: Convert to fraction form
    171,001.88/256,507.20 = 81,023.48/x
  3. Step 3: Cross multiply
    171,001.88x = 256,507.20 × 81,023.48
  4. Step 4: Simplify right side
    171,001.88x = 20,783,105,989.06
  5. Step 5: Solve for x
    x = 20,783,105,989.06/171,001.88
  6. Step 6: Final answer
    x = 121,537.30

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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.