Home / 149,941.06-206,918.49-81,958.48

Finding the Fourth Proportional to 149,941.06, 206,918.49 and 81,958.48

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Solution

The fourth proportional to 149,941.06, 206,918.49 and 81,958.48 is: 113,102.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,941.06 : 206,918.49 = 81,958.48 : x
  2. Step 2: Convert to fraction form
    149,941.06/206,918.49 = 81,958.48/x
  3. Step 3: Cross multiply
    149,941.06x = 206,918.49 × 81,958.48
  4. Step 4: Simplify right side
    149,941.06x = 16,958,724,924.30
  5. Step 5: Solve for x
    x = 16,958,724,924.30/149,941.06
  6. Step 6: Final answer
    x = 113,102.61

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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.