Home / 149,900.22-206,865.26-81,921.40

Finding the Fourth Proportional to 149,900.22, 206,865.26 and 81,921.40

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Solution

The fourth proportional to 149,900.22, 206,865.26 and 81,921.40 is: 113,053.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,900.22 : 206,865.26 = 81,921.40 : x
  2. Step 2: Convert to fraction form
    149,900.22/206,865.26 = 81,921.40/x
  3. Step 3: Cross multiply
    149,900.22x = 206,865.26 × 81,921.40
  4. Step 4: Simplify right side
    149,900.22x = 16,946,691,710.56
  5. Step 5: Solve for x
    x = 16,946,691,710.56/149,900.22
  6. Step 6: Final answer
    x = 113,053.15

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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.