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Finding the Fourth Proportional to 138,694.68, 208,042.56 and 33,513.48

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Solution

The fourth proportional to 138,694.68, 208,042.56 and 33,513.48 is: 50,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694.68 : 208,042.56 = 33,513.48 : x
  2. Step 2: Convert to fraction form
    138,694.68/208,042.56 = 33,513.48/x
  3. Step 3: Cross multiply
    138,694.68x = 208,042.56 × 33,513.48
  4. Step 4: Simplify right side
    138,694.68x = 6,972,230,173.71
  5. Step 5: Solve for x
    x = 6,972,230,173.71/138,694.68
  6. Step 6: Final answer
    x = 50,270.35

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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.