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Finding the Fourth Proportional to 138,925.92, 208,388.88 and 50,179.08

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Solution

The fourth proportional to 138,925.92, 208,388.88 and 50,179.08 is: 75,268.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,925.92 : 208,388.88 = 50,179.08 : x
  2. Step 2: Convert to fraction form
    138,925.92/208,388.88 = 50,179.08/x
  3. Step 3: Cross multiply
    138,925.92x = 208,388.88 × 50,179.08
  4. Step 4: Simplify right side
    138,925.92x = 10,456,762,280.63
  5. Step 5: Solve for x
    x = 10,456,762,280.63/138,925.92
  6. Step 6: Final answer
    x = 75,268.62

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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.