Home / 126,090.24-189,007.76-81,745.16

Finding the Fourth Proportional to 126,090.24, 189,007.76 and 81,745.16

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Solution

The fourth proportional to 126,090.24, 189,007.76 and 81,745.16 is: 122,535.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,090.24 : 189,007.76 = 81,745.16 : x
  2. Step 2: Convert to fraction form
    126,090.24/189,007.76 = 81,745.16/x
  3. Step 3: Cross multiply
    126,090.24x = 189,007.76 × 81,745.16
  4. Step 4: Simplify right side
    126,090.24x = 15,450,469,582.44
  5. Step 5: Solve for x
    x = 15,450,469,582.44/126,090.24
  6. Step 6: Final answer
    x = 122,535.02

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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.