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Finding the Fourth Proportional to 199,759.68, 299,640.66 and 66,639.54

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Solution

The fourth proportional to 199,759.68, 299,640.66 and 66,639.54 is: 99,959.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,759.68 : 299,640.66 = 66,639.54 : x
  2. Step 2: Convert to fraction form
    199,759.68/299,640.66 = 66,639.54/x
  3. Step 3: Cross multiply
    199,759.68x = 299,640.66 × 66,639.54
  4. Step 4: Simplify right side
    199,759.68x = 19,967,915,747.70
  5. Step 5: Solve for x
    x = 19,967,915,747.70/199,759.68
  6. Step 6: Final answer
    x = 99,959.69

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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.