Home / 129,223.44-178,253.96-80,741.28

Finding the Fourth Proportional to 129,223.44, 178,253.96 and 80,741.28

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Solution

The fourth proportional to 129,223.44, 178,253.96 and 80,741.28 is: 111,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,223.44 : 178,253.96 = 80,741.28 : x
  2. Step 2: Convert to fraction form
    129,223.44/178,253.96 = 80,741.28/x
  3. Step 3: Cross multiply
    129,223.44x = 178,253.96 × 80,741.28
  4. Step 4: Simplify right side
    129,223.44x = 14,392,452,895.47
  5. Step 5: Solve for x
    x = 14,392,452,895.47/129,223.44
  6. Step 6: Final answer
    x = 111,376.49

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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.