Home / 139,416.78-209,006.94-55,236.42

Finding the Fourth Proportional to 139,416.78, 209,006.94 and 55,236.42

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Solution

The fourth proportional to 139,416.78, 209,006.94 and 55,236.42 is: 82,807.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,416.78 : 209,006.94 = 55,236.42 : x
  2. Step 2: Convert to fraction form
    139,416.78/209,006.94 = 55,236.42/x
  3. Step 3: Cross multiply
    139,416.78x = 209,006.94 × 55,236.42
  4. Step 4: Simplify right side
    139,416.78x = 11,544,795,120.75
  5. Step 5: Solve for x
    x = 11,544,795,120.75/139,416.78
  6. Step 6: Final answer
    x = 82,807.79

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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.