Home / 149,144.97-205,822.22-81,163.89

Finding the Fourth Proportional to 149,144.97, 205,822.22 and 81,163.89

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Solution

The fourth proportional to 149,144.97, 205,822.22 and 81,163.89 is: 112,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,144.97 : 205,822.22 = 81,163.89 : x
  2. Step 2: Convert to fraction form
    149,144.97/205,822.22 = 81,163.89/x
  3. Step 3: Cross multiply
    149,144.97x = 205,822.22 × 81,163.89
  4. Step 4: Simplify right side
    149,144.97x = 16,705,331,617.82
  5. Step 5: Solve for x
    x = 16,705,331,617.82/149,144.97
  6. Step 6: Final answer
    x = 112,007.34

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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.