Home / 138,849.78-208,231.58-50,091.72

Finding the Fourth Proportional to 138,849.78, 208,231.58 and 50,091.72

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Solution

The fourth proportional to 138,849.78, 208,231.58 and 50,091.72 is: 75,122.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,849.78 : 208,231.58 = 50,091.72 : x
  2. Step 2: Convert to fraction form
    138,849.78/208,231.58 = 50,091.72/x
  3. Step 3: Cross multiply
    138,849.78x = 208,231.58 × 50,091.72
  4. Step 4: Simplify right side
    138,849.78x = 10,430,677,750.06
  5. Step 5: Solve for x
    x = 10,430,677,750.06/138,849.78
  6. Step 6: Final answer
    x = 75,122.03

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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.