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Finding the Fourth Proportional to 133,371.90, 199,993.05 and 74,144.70

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Solution

The fourth proportional to 133,371.90, 199,993.05 and 74,144.70 is: 111,181.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,371.90 : 199,993.05 = 74,144.70 : x
  2. Step 2: Convert to fraction form
    133,371.90/199,993.05 = 74,144.70/x
  3. Step 3: Cross multiply
    133,371.90x = 199,993.05 × 74,144.70
  4. Step 4: Simplify right side
    133,371.90x = 14,828,424,694.34
  5. Step 5: Solve for x
    x = 14,828,424,694.34/133,371.90
  6. Step 6: Final answer
    x = 111,181.03

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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.