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Finding the Fourth Proportional to 138,874.80, 208,313.40 and 33,694.68

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Solution

The fourth proportional to 138,874.80, 208,313.40 and 33,694.68 is: 50,542.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,874.80 : 208,313.40 = 33,694.68 : x
  2. Step 2: Convert to fraction form
    138,874.80/208,313.40 = 33,694.68/x
  3. Step 3: Cross multiply
    138,874.80x = 208,313.40 × 33,694.68
  4. Step 4: Simplify right side
    138,874.80x = 7,019,053,352.71
  5. Step 5: Solve for x
    x = 7,019,053,352.71/138,874.80
  6. Step 6: Final answer
    x = 50,542.31

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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.