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Finding the Fourth Proportional to 170,645.80, 256,163.10 and 100,564.60

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Solution

The fourth proportional to 170,645.80, 256,163.10 and 100,564.60 is: 150,961.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,645.80 : 256,163.10 = 100,564.60 : x
  2. Step 2: Convert to fraction form
    170,645.80/256,163.10 = 100,564.60/x
  3. Step 3: Cross multiply
    170,645.80x = 256,163.10 × 100,564.60
  4. Step 4: Simplify right side
    170,645.80x = 25,760,939,686.26
  5. Step 5: Solve for x
    x = 25,760,939,686.26/170,645.80
  6. Step 6: Final answer
    x = 150,961.46

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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.