Home / 149,239.06-205,947.97-81,255.25

Finding the Fourth Proportional to 149,239.06, 205,947.97 and 81,255.25

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Solution

The fourth proportional to 149,239.06, 205,947.97 and 81,255.25 is: 112,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,239.06 : 205,947.97 = 81,255.25 : x
  2. Step 2: Convert to fraction form
    149,239.06/205,947.97 = 81,255.25/x
  3. Step 3: Cross multiply
    149,239.06x = 205,947.97 × 81,255.25
  4. Step 4: Simplify right side
    149,239.06x = 16,734,353,843.64
  5. Step 5: Solve for x
    x = 16,734,353,843.64/149,239.06
  6. Step 6: Final answer
    x = 112,131.19

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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.