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Finding the Fourth Proportional to 138,855.52, 208,283.28 and 33,674.32

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Solution

The fourth proportional to 138,855.52, 208,283.28 and 33,674.32 is: 50,511.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,855.52 : 208,283.28 = 33,674.32 : x
  2. Step 2: Convert to fraction form
    138,855.52/208,283.28 = 33,674.32/x
  3. Step 3: Cross multiply
    138,855.52x = 208,283.28 × 33,674.32
  4. Step 4: Simplify right side
    138,855.52x = 7,013,797,821.37
  5. Step 5: Solve for x
    x = 7,013,797,821.37/138,855.52
  6. Step 6: Final answer
    x = 50,511.48

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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.