Home / 129,224.44-178,255.34-80,742.28

Finding the Fourth Proportional to 129,224.44, 178,255.34 and 80,742.28

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Solution

The fourth proportional to 129,224.44, 178,255.34 and 80,742.28 is: 111,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,224.44 : 178,255.34 = 80,742.28 : x
  2. Step 2: Convert to fraction form
    129,224.44/178,255.34 = 80,742.28/x
  3. Step 3: Cross multiply
    129,224.44x = 178,255.34 × 80,742.28
  4. Step 4: Simplify right side
    129,224.44x = 14,392,742,573.78
  5. Step 5: Solve for x
    x = 14,392,742,573.78/129,224.44
  6. Step 6: Final answer
    x = 111,377.87

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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.