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Finding the Fourth Proportional to 144,709.30, 217,138.03 and 68,893.60

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Solution

The fourth proportional to 144,709.30, 217,138.03 and 68,893.60 is: 103,375.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,709.30 : 217,138.03 = 68,893.60 : x
  2. Step 2: Convert to fraction form
    144,709.30/217,138.03 = 68,893.60/x
  3. Step 3: Cross multiply
    144,709.30x = 217,138.03 × 68,893.60
  4. Step 4: Simplify right side
    144,709.30x = 14,959,420,583.61
  5. Step 5: Solve for x
    x = 14,959,420,583.61/144,709.30
  6. Step 6: Final answer
    x = 103,375.67

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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.