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Finding the Fourth Proportional to 149,358.20, 206,114.22 and 82,290.20

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Solution

The fourth proportional to 149,358.20, 206,114.22 and 82,290.20 is: 113,560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,358.20 : 206,114.22 = 82,290.20 : x
  2. Step 2: Convert to fraction form
    149,358.20/206,114.22 = 82,290.20/x
  3. Step 3: Cross multiply
    149,358.20x = 206,114.22 × 82,290.20
  4. Step 4: Simplify right side
    149,358.20x = 16,961,179,356.07
  5. Step 5: Solve for x
    x = 16,961,179,356.07/149,358.20
  6. Step 6: Final answer
    x = 113,560.42

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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.