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Finding the Fourth Proportional to 138,805.74, 208,208.07 and 33,624.54

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Solution

The fourth proportional to 138,805.74, 208,208.07 and 33,624.54 is: 50,436.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,805.74 : 208,208.07 = 33,624.54 : x
  2. Step 2: Convert to fraction form
    138,805.74/208,208.07 = 33,624.54/x
  3. Step 3: Cross multiply
    138,805.74x = 208,208.07 × 33,624.54
  4. Step 4: Simplify right side
    138,805.74x = 7,000,900,578.04
  5. Step 5: Solve for x
    x = 7,000,900,578.04/138,805.74
  6. Step 6: Final answer
    x = 50,436.68

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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.