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Finding the Fourth Proportional to 139,147.92, 208,721.16 and 33,967.44

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Solution

The fourth proportional to 139,147.92, 208,721.16 and 33,967.44 is: 50,950.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,147.92 : 208,721.16 = 33,967.44 : x
  2. Step 2: Convert to fraction form
    139,147.92/208,721.16 = 33,967.44/x
  3. Step 3: Cross multiply
    139,147.92x = 208,721.16 × 33,967.44
  4. Step 4: Simplify right side
    139,147.92x = 7,089,723,479.03
  5. Step 5: Solve for x
    x = 7,089,723,479.03/139,147.92
  6. Step 6: Final answer
    x = 50,950.98

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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.