Home / 138,748.20-208,122.30-50,004.60

Finding the Fourth Proportional to 138,748.20, 208,122.30 and 50,004.60

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Solution

The fourth proportional to 138,748.20, 208,122.30 and 50,004.60 is: 75,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,748.20 : 208,122.30 = 50,004.60 : x
  2. Step 2: Convert to fraction form
    138,748.20/208,122.30 = 50,004.60/x
  3. Step 3: Cross multiply
    138,748.20x = 208,122.30 × 50,004.60
  4. Step 4: Simplify right side
    138,748.20x = 10,407,072,362.58
  5. Step 5: Solve for x
    x = 10,407,072,362.58/138,748.20
  6. Step 6: Final answer
    x = 75,006.90

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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.