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Finding the Fourth Proportional to 144,378.53, 199,236.63 and 79,843.58

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Solution

The fourth proportional to 144,378.53, 199,236.63 and 79,843.58 is: 110,180.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,378.53 : 199,236.63 = 79,843.58 : x
  2. Step 2: Convert to fraction form
    144,378.53/199,236.63 = 79,843.58/x
  3. Step 3: Cross multiply
    144,378.53x = 199,236.63 × 79,843.58
  4. Step 4: Simplify right side
    144,378.53x = 15,907,765,806.34
  5. Step 5: Solve for x
    x = 15,907,765,806.34/144,378.53
  6. Step 6: Final answer
    x = 110,180.97

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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.