Home / 126,177.48-189,138.51-81,832.41

Finding the Fourth Proportional to 126,177.48, 189,138.51 and 81,832.41

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Solution

The fourth proportional to 126,177.48, 189,138.51 and 81,832.41 is: 122,665.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,177.48 : 189,138.51 = 81,832.41 : x
  2. Step 2: Convert to fraction form
    126,177.48/189,138.51 = 81,832.41/x
  3. Step 3: Cross multiply
    126,177.48x = 189,138.51 × 81,832.41
  4. Step 4: Simplify right side
    126,177.48x = 15,477,660,097.11
  5. Step 5: Solve for x
    x = 15,477,660,097.11/126,177.48
  6. Step 6: Final answer
    x = 122,665.79

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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.