Home / 100,402.24-138,556.92-55,082.54

Finding the Fourth Proportional to 100,402.24, 138,556.92 and 55,082.54

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Solution

The fourth proportional to 100,402.24, 138,556.92 and 55,082.54 is: 76,014.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,402.24 : 138,556.92 = 55,082.54 : x
  2. Step 2: Convert to fraction form
    100,402.24/138,556.92 = 55,082.54/x
  3. Step 3: Cross multiply
    100,402.24x = 138,556.92 × 55,082.54
  4. Step 4: Simplify right side
    100,402.24x = 7,632,067,096.52
  5. Step 5: Solve for x
    x = 7,632,067,096.52/100,402.24
  6. Step 6: Final answer
    x = 76,014.91

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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.