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Finding the Fourth Proportional to 144,378.65, 199,236.81 and 79,843.69

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Solution

The fourth proportional to 144,378.65, 199,236.81 and 79,843.69 is: 110,181.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,378.65 : 199,236.81 = 79,843.69 : x
  2. Step 2: Convert to fraction form
    144,378.65/199,236.81 = 79,843.69/x
  3. Step 3: Cross multiply
    144,378.65x = 199,236.81 × 79,843.69
  4. Step 4: Simplify right side
    144,378.65x = 15,907,802,642.69
  5. Step 5: Solve for x
    x = 15,907,802,642.69/144,378.65
  6. Step 6: Final answer
    x = 110,181.13

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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.