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Finding the Fourth Proportional to 137,168.88, 189,298.44 and 80,579.76

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Solution

The fourth proportional to 137,168.88, 189,298.44 and 80,579.76 is: 111,203.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,168.88 : 189,298.44 = 80,579.76 : x
  2. Step 2: Convert to fraction form
    137,168.88/189,298.44 = 80,579.76/x
  3. Step 3: Cross multiply
    137,168.88x = 189,298.44 × 80,579.76
  4. Step 4: Simplify right side
    137,168.88x = 15,253,622,863.57
  5. Step 5: Solve for x
    x = 15,253,622,863.57/137,168.88
  6. Step 6: Final answer
    x = 111,203.23

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1.5x scale

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.