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Finding the Fourth Proportional to 147,679.30, 203,797.38 and 80,611.30

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Solution

The fourth proportional to 147,679.30, 203,797.38 and 80,611.30 is: 111,243.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,679.30 : 203,797.38 = 80,611.30 : x
  2. Step 2: Convert to fraction form
    147,679.30/203,797.38 = 80,611.30/x
  3. Step 3: Cross multiply
    147,679.30x = 203,797.38 × 80,611.30
  4. Step 4: Simplify right side
    147,679.30x = 16,428,371,738.39
  5. Step 5: Solve for x
    x = 16,428,371,738.39/147,679.30
  6. Step 6: Final answer
    x = 111,243.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.