Home / 149,117.44-205,786.24-81,138.56

Finding the Fourth Proportional to 149,117.44, 205,786.24 and 81,138.56

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Solution

The fourth proportional to 149,117.44, 205,786.24 and 81,138.56 is: 111,973.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,117.44 : 205,786.24 = 81,138.56 : x
  2. Step 2: Convert to fraction form
    149,117.44/205,786.24 = 81,138.56/x
  3. Step 3: Cross multiply
    149,117.44x = 205,786.24 × 81,138.56
  4. Step 4: Simplify right side
    149,117.44x = 16,697,199,181.41
  5. Step 5: Solve for x
    x = 16,697,199,181.41/149,117.44
  6. Step 6: Final answer
    x = 111,973.48

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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.