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Finding the Fourth Proportional to 139,690.44, 192,690.90 and 101,404.98

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Solution

The fourth proportional to 139,690.44, 192,690.90 and 101,404.98 is: 139,879.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,690.44 : 192,690.90 = 101,404.98 : x
  2. Step 2: Convert to fraction form
    139,690.44/192,690.90 = 101,404.98/x
  3. Step 3: Cross multiply
    139,690.44x = 192,690.90 × 101,404.98
  4. Step 4: Simplify right side
    139,690.44x = 19,539,816,860.68
  5. Step 5: Solve for x
    x = 19,539,816,860.68/139,690.44
  6. Step 6: Final answer
    x = 139,879.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.