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Finding the Fourth Proportional to 171,104.78, 256,021.50 and 107,628.50

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Solution

The fourth proportional to 171,104.78, 256,021.50 and 107,628.50 is: 161,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,104.78 : 256,021.50 = 107,628.50 : x
  2. Step 2: Convert to fraction form
    171,104.78/256,021.50 = 107,628.50/x
  3. Step 3: Cross multiply
    171,104.78x = 256,021.50 × 107,628.50
  4. Step 4: Simplify right side
    171,104.78x = 27,555,210,012.75
  5. Step 5: Solve for x
    x = 27,555,210,012.75/171,104.78
  6. Step 6: Final answer
    x = 161,042.90

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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.