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Finding the Fourth Proportional to 168,028.80, 231,796.80 and 143,145.60

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Solution

The fourth proportional to 168,028.80, 231,796.80 and 143,145.60 is: 197,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,028.80 : 231,796.80 = 143,145.60 : x
  2. Step 2: Convert to fraction form
    168,028.80/231,796.80 = 143,145.60/x
  3. Step 3: Cross multiply
    168,028.80x = 231,796.80 × 143,145.60
  4. Step 4: Simplify right side
    168,028.80x = 33,180,692,014.08
  5. Step 5: Solve for x
    x = 33,180,692,014.08/168,028.80
  6. Step 6: Final answer
    x = 197,470.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.