Home / 90,404.13-135,556.52-71,803.29

Finding the Fourth Proportional to 90,404.13, 135,556.52 and 71,803.29

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Solution

The fourth proportional to 90,404.13, 135,556.52 and 71,803.29 is: 107,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,404.13 : 135,556.52 = 71,803.29 : x
  2. Step 2: Convert to fraction form
    90,404.13/135,556.52 = 71,803.29/x
  3. Step 3: Cross multiply
    90,404.13x = 135,556.52 × 71,803.29
  4. Step 4: Simplify right side
    90,404.13x = 9,733,403,757.93
  5. Step 5: Solve for x
    x = 9,733,403,757.93/90,404.13
  6. Step 6: Final answer
    x = 107,665.48

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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.