Home / 115,681,910.40-159,641,022.96-66,123,343.44

Finding the Fourth Proportional to 115,681,910.40, 159,641,022.96 and 66,123,343.44

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Solution

The fourth proportional to 115,681,910.40, 159,641,022.96 and 66,123,343.44 is: 91,250,206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,681,910.40 : 159,641,022.96 = 66,123,343.44 : x
  2. Step 2: Convert to fraction form
    115,681,910.40/159,641,022.96 = 66,123,343.44/x
  3. Step 3: Cross multiply
    115,681,910.40x = 159,641,022.96 × 66,123,343.44
  4. Step 4: Simplify right side
    115,681,910.40x = 10,555,998,188,297,006
  5. Step 5: Solve for x
    x = 10,555,998,188,297,006/115,681,910.40
  6. Step 6: Final answer
    x = 91,250,206.29

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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.