Home / 139,969,343.70-209,954,015.55-120,821,721.30

Finding the Fourth Proportional to 139,969,343.70, 209,954,015.55 and 120,821,721.30

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Solution

The fourth proportional to 139,969,343.70, 209,954,015.55 and 120,821,721.30 is: 181,232,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,343.70 : 209,954,015.55 = 120,821,721.30 : x
  2. Step 2: Convert to fraction form
    139,969,343.70/209,954,015.55 = 120,821,721.30/x
  3. Step 3: Cross multiply
    139,969,343.70x = 209,954,015.55 × 120,821,721.30
  4. Step 4: Simplify right side
    139,969,343.70x = 25,367,005,552,597,968
  5. Step 5: Solve for x
    x = 25,367,005,552,597,968/139,969,343.70
  6. Step 6: Final answer
    x = 181,232,581.95

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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.