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Finding the Fourth Proportional to 138,753.94, 208,130.92 and 33,572.91

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Solution

The fourth proportional to 138,753.94, 208,130.92 and 33,572.91 is: 50,359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,753.94 : 208,130.92 = 33,572.91 : x
  2. Step 2: Convert to fraction form
    138,753.94/208,130.92 = 33,572.91/x
  3. Step 3: Cross multiply
    138,753.94x = 208,130.92 × 33,572.91
  4. Step 4: Simplify right side
    138,753.94x = 6,987,560,645.38
  5. Step 5: Solve for x
    x = 6,987,560,645.38/138,753.94
  6. Step 6: Final answer
    x = 50,359.37

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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.