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Finding the Fourth Proportional to 138,967.25, 208,450.26 and 33,787.13

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Solution

The fourth proportional to 138,967.25, 208,450.26 and 33,787.13 is: 50,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,967.25 : 208,450.26 = 33,787.13 : x
  2. Step 2: Convert to fraction form
    138,967.25/208,450.26 = 33,787.13/x
  3. Step 3: Cross multiply
    138,967.25x = 208,450.26 × 33,787.13
  4. Step 4: Simplify right side
    138,967.25x = 7,042,934,990.90
  5. Step 5: Solve for x
    x = 7,042,934,990.90/138,967.25
  6. Step 6: Final answer
    x = 50,680.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.