Home / 149,800.82-206,704.05-86,115.38

Finding the Fourth Proportional to 149,800.82, 206,704.05 and 86,115.38

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Solution

The fourth proportional to 149,800.82, 206,704.05 and 86,115.38 is: 118,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,800.82 : 206,704.05 = 86,115.38 : x
  2. Step 2: Convert to fraction form
    149,800.82/206,704.05 = 86,115.38/x
  3. Step 3: Cross multiply
    149,800.82x = 206,704.05 × 86,115.38
  4. Step 4: Simplify right side
    149,800.82x = 17,800,397,813.29
  5. Step 5: Solve for x
    x = 17,800,397,813.29/149,800.82
  6. Step 6: Final answer
    x = 118,827.11

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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.