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Finding the Fourth Proportional to 149,889.30, 206,847.24 and 82,821.30

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Solution

The fourth proportional to 149,889.30, 206,847.24 and 82,821.30 is: 114,293.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,889.30 : 206,847.24 = 82,821.30 : x
  2. Step 2: Convert to fraction form
    149,889.30/206,847.24 = 82,821.30/x
  3. Step 3: Cross multiply
    149,889.30x = 206,847.24 × 82,821.30
  4. Step 4: Simplify right side
    149,889.30x = 17,131,357,318.21
  5. Step 5: Solve for x
    x = 17,131,357,318.21/149,889.30
  6. Step 6: Final answer
    x = 114,293.40

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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.