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Finding the Fourth Proportional to 139,224.42, 208,540.08 and 68,037.48

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Solution

The fourth proportional to 139,224.42, 208,540.08 and 68,037.48 is: 101,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,224.42 : 208,540.08 = 68,037.48 : x
  2. Step 2: Convert to fraction form
    139,224.42/208,540.08 = 68,037.48/x
  3. Step 3: Cross multiply
    139,224.42x = 208,540.08 × 68,037.48
  4. Step 4: Simplify right side
    139,224.42x = 14,188,541,522.20
  5. Step 5: Solve for x
    x = 14,188,541,522.20/139,224.42
  6. Step 6: Final answer
    x = 101,911.30

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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.