Home / 137,203.44-189,280.64-80,589.28

Finding the Fourth Proportional to 137,203.44, 189,280.64 and 80,589.28

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Solution

The fourth proportional to 137,203.44, 189,280.64 and 80,589.28 is: 111,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,203.44 : 189,280.64 = 80,589.28 : x
  2. Step 2: Convert to fraction form
    137,203.44/189,280.64 = 80,589.28/x
  3. Step 3: Cross multiply
    137,203.44x = 189,280.64 × 80,589.28
  4. Step 4: Simplify right side
    137,203.44x = 15,253,990,495.54
  5. Step 5: Solve for x
    x = 15,253,990,495.54/137,203.44
  6. Step 6: Final answer
    x = 111,177.90

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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.