Home / 138,860.56-208,247.76-50,102.56

Finding the Fourth Proportional to 138,860.56, 208,247.76 and 50,102.56

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Solution

The fourth proportional to 138,860.56, 208,247.76 and 50,102.56 is: 75,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,860.56 : 208,247.76 = 50,102.56 : x
  2. Step 2: Convert to fraction form
    138,860.56/208,247.76 = 50,102.56/x
  3. Step 3: Cross multiply
    138,860.56x = 208,247.76 × 50,102.56
  4. Step 4: Simplify right side
    138,860.56x = 10,433,745,890.27
  5. Step 5: Solve for x
    x = 10,433,745,890.27/138,860.56
  6. Step 6: Final answer
    x = 75,138.30

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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.