Home / 137,086.32-189,100.26-80,486.76

Finding the Fourth Proportional to 137,086.32, 189,100.26 and 80,486.76

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Solution

The fourth proportional to 137,086.32, 189,100.26 and 80,486.76 is: 111,025.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,086.32 : 189,100.26 = 80,486.76 : x
  2. Step 2: Convert to fraction form
    137,086.32/189,100.26 = 80,486.76/x
  3. Step 3: Cross multiply
    137,086.32x = 189,100.26 × 80,486.76
  4. Step 4: Simplify right side
    137,086.32x = 15,220,067,242.56
  5. Step 5: Solve for x
    x = 15,220,067,242.56/137,086.32
  6. Step 6: Final answer
    x = 111,025.43

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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.