Home / 225,961.36-311,826.56-123,987.48

Finding the Fourth Proportional to 225,961.36, 311,826.56 and 123,987.48

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Solution

The fourth proportional to 225,961.36, 311,826.56 and 123,987.48 is: 171,102.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,961.36 : 311,826.56 = 123,987.48 : x
  2. Step 2: Convert to fraction form
    225,961.36/311,826.56 = 123,987.48/x
  3. Step 3: Cross multiply
    225,961.36x = 311,826.56 × 123,987.48
  4. Step 4: Simplify right side
    225,961.36x = 38,662,589,371.47
  5. Step 5: Solve for x
    x = 38,662,589,371.47/225,961.36
  6. Step 6: Final answer
    x = 171,102.66

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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.