Home / 138,872.20-208,308.62-50,188.36

Finding the Fourth Proportional to 138,872.20, 208,308.62 and 50,188.36

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Solution

The fourth proportional to 138,872.20, 208,308.62 and 50,188.36 is: 75,282.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,872.20 : 208,308.62 = 50,188.36 : x
  2. Step 2: Convert to fraction form
    138,872.20/208,308.62 = 50,188.36/x
  3. Step 3: Cross multiply
    138,872.20x = 208,308.62 × 50,188.36
  4. Step 4: Simplify right side
    138,872.20x = 10,454,668,011.66
  5. Step 5: Solve for x
    x = 10,454,668,011.66/138,872.20
  6. Step 6: Final answer
    x = 75,282.66

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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.