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Finding the Fourth Proportional to 199,915, 299,639.22 and 111,126.04

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Solution

The fourth proportional to 199,915, 299,639.22 and 111,126.04 is: 166,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,915 : 299,639.22 = 111,126.04 : x
  2. Step 2: Convert to fraction form
    199,915/299,639.22 = 111,126.04/x
  3. Step 3: Cross multiply
    199,915x = 299,639.22 × 111,126.04
  4. Step 4: Simplify right side
    199,915x = 33,297,719,947.29
  5. Step 5: Solve for x
    x = 33,297,719,947.29/199,915
  6. Step 6: Final answer
    x = 166,559.39

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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.