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Finding the Fourth Proportional to 199,912.60, 299,868.90 and 52,168.60

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Solution

The fourth proportional to 199,912.60, 299,868.90 and 52,168.60 is: 78,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,912.60 : 299,868.90 = 52,168.60 : x
  2. Step 2: Convert to fraction form
    199,912.60/299,868.90 = 52,168.60/x
  3. Step 3: Cross multiply
    199,912.60x = 299,868.90 × 52,168.60
  4. Step 4: Simplify right side
    199,912.60x = 15,643,740,696.54
  5. Step 5: Solve for x
    x = 15,643,740,696.54/199,912.60
  6. Step 6: Final answer
    x = 78,252.90

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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.