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Finding the Fourth Proportional to 138,760.94, 208,141.42 and 33,579.92

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Solution

The fourth proportional to 138,760.94, 208,141.42 and 33,579.92 is: 50,369.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,760.94 : 208,141.42 = 33,579.92 : x
  2. Step 2: Convert to fraction form
    138,760.94/208,141.42 = 33,579.92/x
  3. Step 3: Cross multiply
    138,760.94x = 208,141.42 × 33,579.92
  4. Step 4: Simplify right side
    138,760.94x = 6,989,372,232.29
  5. Step 5: Solve for x
    x = 6,989,372,232.29/138,760.94
  6. Step 6: Final answer
    x = 50,369.88

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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.