Home / 138,838.10-208,257.15-50,105.30

Finding the Fourth Proportional to 138,838.10, 208,257.15 and 50,105.30

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Solution

The fourth proportional to 138,838.10, 208,257.15 and 50,105.30 is: 75,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,838.10 : 208,257.15 = 50,105.30 : x
  2. Step 2: Convert to fraction form
    138,838.10/208,257.15 = 50,105.30/x
  3. Step 3: Cross multiply
    138,838.10x = 208,257.15 × 50,105.30
  4. Step 4: Simplify right side
    138,838.10x = 10,434,786,977.90
  5. Step 5: Solve for x
    x = 10,434,786,977.90/138,838.10
  6. Step 6: Final answer
    x = 75,157.95

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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.