Home / 149,866.14-206,816.72-81,881.22

Finding the Fourth Proportional to 149,866.14, 206,816.72 and 81,881.22

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Solution

The fourth proportional to 149,866.14, 206,816.72 and 81,881.22 is: 112,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,866.14 : 206,816.72 = 81,881.22 : x
  2. Step 2: Convert to fraction form
    149,866.14/206,816.72 = 81,881.22/x
  3. Step 3: Cross multiply
    149,866.14x = 206,816.72 × 81,881.22
  4. Step 4: Simplify right side
    149,866.14x = 16,934,404,940.59
  5. Step 5: Solve for x
    x = 16,934,404,940.59/149,866.14
  6. Step 6: Final answer
    x = 112,996.87

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1.5x scale

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.