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Finding the Fourth Proportional to 171,370.90, 257,100.69 and 100,353.54

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Solution

The fourth proportional to 171,370.90, 257,100.69 and 100,353.54 is: 150,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,370.90 : 257,100.69 = 100,353.54 : x
  2. Step 2: Convert to fraction form
    171,370.90/257,100.69 = 100,353.54/x
  3. Step 3: Cross multiply
    171,370.90x = 257,100.69 × 100,353.54
  4. Step 4: Simplify right side
    171,370.90x = 25,800,964,377.94
  5. Step 5: Solve for x
    x = 25,800,964,377.94/171,370.90
  6. Step 6: Final answer
    x = 150,556.28

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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.