Home / 149,003.85-205,626.32-81,021.56

Finding the Fourth Proportional to 149,003.85, 205,626.32 and 81,021.56

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Solution

The fourth proportional to 149,003.85, 205,626.32 and 81,021.56 is: 111,810.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,003.85 : 205,626.32 = 81,021.56 : x
  2. Step 2: Convert to fraction form
    149,003.85/205,626.32 = 81,021.56/x
  3. Step 3: Cross multiply
    149,003.85x = 205,626.32 × 81,021.56
  4. Step 4: Simplify right side
    149,003.85x = 16,660,165,320.90
  5. Step 5: Solve for x
    x = 16,660,165,320.90/149,003.85
  6. Step 6: Final answer
    x = 111,810.30

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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.