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Finding the Fourth Proportional to 90,194.63, 135,162.51 and 50,668.55

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Solution

The fourth proportional to 90,194.63, 135,162.51 and 50,668.55 is: 75,930.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,194.63 : 135,162.51 = 50,668.55 : x
  2. Step 2: Convert to fraction form
    90,194.63/135,162.51 = 50,668.55/x
  3. Step 3: Cross multiply
    90,194.63x = 135,162.51 × 50,668.55
  4. Step 4: Simplify right side
    90,194.63x = 6,848,488,396.06
  5. Step 5: Solve for x
    x = 6,848,488,396.06/90,194.63
  6. Step 6: Final answer
    x = 75,930.11

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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.