Home / 126,188,949.70-189,283,424.55-80,839,317.70

Finding the Fourth Proportional to 126,188,949.70, 189,283,424.55 and 80,839,317.70

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Solution

The fourth proportional to 126,188,949.70, 189,283,424.55 and 80,839,317.70 is: 121,258,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,188,949.70 : 189,283,424.55 = 80,839,317.70 : x
  2. Step 2: Convert to fraction form
    126,188,949.70/189,283,424.55 = 80,839,317.70/x
  3. Step 3: Cross multiply
    126,188,949.70x = 189,283,424.55 × 80,839,317.70
  4. Step 4: Simplify right side
    126,188,949.70x = 15,301,542,892,541,432
  5. Step 5: Solve for x
    x = 15,301,542,892,541,432/126,188,949.70
  6. Step 6: Final answer
    x = 121,258,976.55

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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.