Home / 149,354.57-206,109.20-82,286.57

Finding the Fourth Proportional to 149,354.57, 206,109.20 and 82,286.57

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Solution

The fourth proportional to 149,354.57, 206,109.20 and 82,286.57 is: 113,555.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,354.57 : 206,109.20 = 82,286.57 : x
  2. Step 2: Convert to fraction form
    149,354.57/206,109.20 = 82,286.57/x
  3. Step 3: Cross multiply
    149,354.57x = 206,109.20 × 82,286.57
  4. Step 4: Simplify right side
    149,354.57x = 16,960,018,702.01
  5. Step 5: Solve for x
    x = 16,960,018,702.01/149,354.57
  6. Step 6: Final answer
    x = 113,555.41

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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.