Home / 149,404.09-206,177.67-81,421.06

Finding the Fourth Proportional to 149,404.09, 206,177.67 and 81,421.06

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Solution

The fourth proportional to 149,404.09, 206,177.67 and 81,421.06 is: 112,361.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,404.09 : 206,177.67 = 81,421.06 : x
  2. Step 2: Convert to fraction form
    149,404.09/206,177.67 = 81,421.06/x
  3. Step 3: Cross multiply
    149,404.09x = 206,177.67 × 81,421.06
  4. Step 4: Simplify right side
    149,404.09x = 16,787,204,439.73
  5. Step 5: Solve for x
    x = 16,787,204,439.73/149,404.09
  6. Step 6: Final answer
    x = 112,361.08

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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.