Home / 149,257.54-205,908.77-100,843.84

Finding the Fourth Proportional to 149,257.54, 205,908.77 and 100,843.84

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Solution

The fourth proportional to 149,257.54, 205,908.77 and 100,843.84 is: 139,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,257.54 : 205,908.77 = 100,843.84 : x
  2. Step 2: Convert to fraction form
    149,257.54/205,908.77 = 100,843.84/x
  3. Step 3: Cross multiply
    149,257.54x = 205,908.77 × 100,843.84
  4. Step 4: Simplify right side
    149,257.54x = 20,764,629,522.71
  5. Step 5: Solve for x
    x = 20,764,629,522.71/149,257.54
  6. Step 6: Final answer
    x = 139,119.47

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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.