Home / 138,452.92-191,048.06-81,049.66

Finding the Fourth Proportional to 138,452.92, 191,048.06 and 81,049.66

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Solution

The fourth proportional to 138,452.92, 191,048.06 and 81,049.66 is: 111,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,452.92 : 191,048.06 = 81,049.66 : x
  2. Step 2: Convert to fraction form
    138,452.92/191,048.06 = 81,049.66/x
  3. Step 3: Cross multiply
    138,452.92x = 191,048.06 × 81,049.66
  4. Step 4: Simplify right side
    138,452.92x = 15,484,380,306.66
  5. Step 5: Solve for x
    x = 15,484,380,306.66/138,452.92
  6. Step 6: Final answer
    x = 111,838.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.