Home / 149,102.60-205,763.22-81,119.96

Finding the Fourth Proportional to 149,102.60, 205,763.22 and 81,119.96

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Solution

The fourth proportional to 149,102.60, 205,763.22 and 81,119.96 is: 111,946.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,102.60 : 205,763.22 = 81,119.96 : x
  2. Step 2: Convert to fraction form
    149,102.60/205,763.22 = 81,119.96/x
  3. Step 3: Cross multiply
    149,102.60x = 205,763.22 × 81,119.96
  4. Step 4: Simplify right side
    149,102.60x = 16,691,504,175.87
  5. Step 5: Solve for x
    x = 16,691,504,175.87/149,102.60
  6. Step 6: Final answer
    x = 111,946.43

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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.