Home / 138,212.72-207,044.79-106,512.76

Finding the Fourth Proportional to 138,212.72, 207,044.79 and 106,512.76

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Solution

The fourth proportional to 138,212.72, 207,044.79 and 106,512.76 is: 159,557.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,212.72 : 207,044.79 = 106,512.76 : x
  2. Step 2: Convert to fraction form
    138,212.72/207,044.79 = 106,512.76/x
  3. Step 3: Cross multiply
    138,212.72x = 207,044.79 × 106,512.76
  4. Step 4: Simplify right side
    138,212.72x = 22,052,912,026.52
  5. Step 5: Solve for x
    x = 22,052,912,026.52/138,212.72
  6. Step 6: Final answer
    x = 159,557.76

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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.