Home / 137,619.06-189,869.44-80,245.40

Finding the Fourth Proportional to 137,619.06, 189,869.44 and 80,245.40

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Solution

The fourth proportional to 137,619.06, 189,869.44 and 80,245.40 is: 110,712.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,619.06 : 189,869.44 = 80,245.40 : x
  2. Step 2: Convert to fraction form
    137,619.06/189,869.44 = 80,245.40/x
  3. Step 3: Cross multiply
    137,619.06x = 189,869.44 × 80,245.40
  4. Step 4: Simplify right side
    137,619.06x = 15,236,149,160.58
  5. Step 5: Solve for x
    x = 15,236,149,160.58/137,619.06
  6. Step 6: Final answer
    x = 110,712.49

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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.