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Finding the Fourth Proportional to 138,760.58, 208,142.08 and 33,579.64

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Solution

The fourth proportional to 138,760.58, 208,142.08 and 33,579.64 is: 50,369.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,760.58 : 208,142.08 = 33,579.64 : x
  2. Step 2: Convert to fraction form
    138,760.58/208,142.08 = 33,579.64/x
  3. Step 3: Cross multiply
    138,760.58x = 208,142.08 × 33,579.64
  4. Step 4: Simplify right side
    138,760.58x = 6,989,336,115.25
  5. Step 5: Solve for x
    x = 6,989,336,115.25/138,760.58
  6. Step 6: Final answer
    x = 50,369.75

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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.