Home / 225,721.76-311,489.28-123,743.73

Finding the Fourth Proportional to 225,721.76, 311,489.28 and 123,743.73

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Solution

The fourth proportional to 225,721.76, 311,489.28 and 123,743.73 is: 170,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,721.76 : 311,489.28 = 123,743.73 : x
  2. Step 2: Convert to fraction form
    225,721.76/311,489.28 = 123,743.73/x
  3. Step 3: Cross multiply
    225,721.76x = 311,489.28 × 123,743.73
  4. Step 4: Simplify right side
    225,721.76x = 38,544,845,362.21
  5. Step 5: Solve for x
    x = 38,544,845,362.21/225,721.76
  6. Step 6: Final answer
    x = 170,762.65

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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.