Home / 149,177.54-205,869.36-81,198.90

Finding the Fourth Proportional to 149,177.54, 205,869.36 and 81,198.90

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Solution

The fourth proportional to 149,177.54, 205,869.36 and 81,198.90 is: 112,056.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,177.54 : 205,869.36 = 81,198.90 : x
  2. Step 2: Convert to fraction form
    149,177.54/205,869.36 = 81,198.90/x
  3. Step 3: Cross multiply
    149,177.54x = 205,869.36 × 81,198.90
  4. Step 4: Simplify right side
    149,177.54x = 16,716,364,546.36
  5. Step 5: Solve for x
    x = 16,716,364,546.36/149,177.54
  6. Step 6: Final answer
    x = 112,056.85

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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.