Home / 168,135.24-231,997.80-100,143.84

Finding the Fourth Proportional to 168,135.24, 231,997.80 and 100,143.84

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Solution

The fourth proportional to 168,135.24, 231,997.80 and 100,143.84 is: 138,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,135.24 : 231,997.80 = 100,143.84 : x
  2. Step 2: Convert to fraction form
    168,135.24/231,997.80 = 100,143.84/x
  3. Step 3: Cross multiply
    168,135.24x = 231,997.80 × 100,143.84
  4. Step 4: Simplify right side
    168,135.24x = 23,233,150,563.55
  5. Step 5: Solve for x
    x = 23,233,150,563.55/168,135.24
  6. Step 6: Final answer
    x = 138,181.33

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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.