Home / 127,824.66-176,393.97-80,103.78

Finding the Fourth Proportional to 127,824.66, 176,393.97 and 80,103.78

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Solution

The fourth proportional to 127,824.66, 176,393.97 and 80,103.78 is: 110,540.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,824.66 : 176,393.97 = 80,103.78 : x
  2. Step 2: Convert to fraction form
    127,824.66/176,393.97 = 80,103.78/x
  3. Step 3: Cross multiply
    127,824.66x = 176,393.97 × 80,103.78
  4. Step 4: Simplify right side
    127,824.66x = 14,129,823,766.21
  5. Step 5: Solve for x
    x = 14,129,823,766.21/127,824.66
  6. Step 6: Final answer
    x = 110,540.67

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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.