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Finding the Fourth Proportional to 100,522.20, 150,564.60 and 80,839.20

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Solution

The fourth proportional to 100,522.20, 150,564.60 and 80,839.20 is: 121,082.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,522.20 : 150,564.60 = 80,839.20 : x
  2. Step 2: Convert to fraction form
    100,522.20/150,564.60 = 80,839.20/x
  3. Step 3: Cross multiply
    100,522.20x = 150,564.60 × 80,839.20
  4. Step 4: Simplify right side
    100,522.20x = 12,171,521,812.32
  5. Step 5: Solve for x
    x = 12,171,521,812.32/100,522.20
  6. Step 6: Final answer
    x = 121,082.92

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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.