Home / 111,327.28-166,629.66-81,738.52

Finding the Fourth Proportional to 111,327.28, 166,629.66 and 81,738.52

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Solution

The fourth proportional to 111,327.28, 166,629.66 and 81,738.52 is: 122,342.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,327.28 : 166,629.66 = 81,738.52 : x
  2. Step 2: Convert to fraction form
    111,327.28/166,629.66 = 81,738.52/x
  3. Step 3: Cross multiply
    111,327.28x = 166,629.66 × 81,738.52
  4. Step 4: Simplify right side
    111,327.28x = 13,620,061,796.50
  5. Step 5: Solve for x
    x = 13,620,061,796.50/111,327.28
  6. Step 6: Final answer
    x = 122,342.54

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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.