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Finding the Fourth Proportional to 100,396.77, 150,394.31 and 60,393.69

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Solution

The fourth proportional to 100,396.77, 150,394.31 and 60,393.69 is: 90,469.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,396.77 : 150,394.31 = 60,393.69 : x
  2. Step 2: Convert to fraction form
    100,396.77/150,394.31 = 60,393.69/x
  3. Step 3: Cross multiply
    100,396.77x = 150,394.31 × 60,393.69
  4. Step 4: Simplify right side
    100,396.77x = 9,082,867,335.90
  5. Step 5: Solve for x
    x = 9,082,867,335.90/100,396.77
  6. Step 6: Final answer
    x = 90,469.72

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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.