Home / 149,081.74-205,736.56-81,102.54

Finding the Fourth Proportional to 149,081.74, 205,736.56 and 81,102.54

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Solution

The fourth proportional to 149,081.74, 205,736.56 and 81,102.54 is: 111,923.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,081.74 : 205,736.56 = 81,102.54 : x
  2. Step 2: Convert to fraction form
    149,081.74/205,736.56 = 81,102.54/x
  3. Step 3: Cross multiply
    149,081.74x = 205,736.56 × 81,102.54
  4. Step 4: Simplify right side
    149,081.74x = 16,685,757,586.86
  5. Step 5: Solve for x
    x = 16,685,757,586.86/149,081.74
  6. Step 6: Final answer
    x = 111,923.55

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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.