Home / 149,186.45-205,881.74-91,858.85

Finding the Fourth Proportional to 149,186.45, 205,881.74 and 91,858.85

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Solution

The fourth proportional to 149,186.45, 205,881.74 and 91,858.85 is: 126,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,186.45 : 205,881.74 = 91,858.85 : x
  2. Step 2: Convert to fraction form
    149,186.45/205,881.74 = 91,858.85/x
  3. Step 3: Cross multiply
    149,186.45x = 205,881.74 × 91,858.85
  4. Step 4: Simplify right side
    149,186.45x = 18,912,060,016.93
  5. Step 5: Solve for x
    x = 18,912,060,016.93/149,186.45
  6. Step 6: Final answer
    x = 126,767.95

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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.