Home / 149,222.88-205,921.14-81,238.38

Finding the Fourth Proportional to 149,222.88, 205,921.14 and 81,238.38

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Solution

The fourth proportional to 149,222.88, 205,921.14 and 81,238.38 is: 112,105.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,222.88 : 205,921.14 = 81,238.38 : x
  2. Step 2: Convert to fraction form
    149,222.88/205,921.14 = 81,238.38/x
  3. Step 3: Cross multiply
    149,222.88x = 205,921.14 × 81,238.38
  4. Step 4: Simplify right side
    149,222.88x = 16,728,699,821.35
  5. Step 5: Solve for x
    x = 16,728,699,821.35/149,222.88
  6. Step 6: Final answer
    x = 112,105.46

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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.