Home / 139,022.25-191,857.11-78,595.44

Finding the Fourth Proportional to 139,022.25, 191,857.11 and 78,595.44

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Solution

The fourth proportional to 139,022.25, 191,857.11 and 78,595.44 is: 108,465.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,022.25 : 191,857.11 = 78,595.44 : x
  2. Step 2: Convert to fraction form
    139,022.25/191,857.11 = 78,595.44/x
  3. Step 3: Cross multiply
    139,022.25x = 191,857.11 × 78,595.44
  4. Step 4: Simplify right side
    139,022.25x = 15,079,093,977.58
  5. Step 5: Solve for x
    x = 15,079,093,977.58/139,022.25
  6. Step 6: Final answer
    x = 108,465.33

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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.