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Finding the Fourth Proportional to 90,092.44, 135,081.42 and 79,021.36

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Solution

The fourth proportional to 90,092.44, 135,081.42 and 79,021.36 is: 118,481.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,092.44 : 135,081.42 = 79,021.36 : x
  2. Step 2: Convert to fraction form
    90,092.44/135,081.42 = 79,021.36/x
  3. Step 3: Cross multiply
    90,092.44x = 135,081.42 × 79,021.36
  4. Step 4: Simplify right side
    90,092.44x = 10,674,317,519.13
  5. Step 5: Solve for x
    x = 10,674,317,519.13/90,092.44
  6. Step 6: Final answer
    x = 118,481.83

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1.5x scale

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.