Home / 126,137.40-188,991.99-76,112.38

Finding the Fourth Proportional to 126,137.40, 188,991.99 and 76,112.38

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Solution

The fourth proportional to 126,137.40, 188,991.99 and 76,112.38 is: 114,039.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,137.40 : 188,991.99 = 76,112.38 : x
  2. Step 2: Convert to fraction form
    126,137.40/188,991.99 = 76,112.38/x
  3. Step 3: Cross multiply
    126,137.40x = 188,991.99 × 76,112.38
  4. Step 4: Simplify right side
    126,137.40x = 14,384,630,396.08
  5. Step 5: Solve for x
    x = 14,384,630,396.08/126,137.40
  6. Step 6: Final answer
    x = 114,039.37

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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.