Home / 137,583.28-189,867-80,221.04

Finding the Fourth Proportional to 137,583.28, 189,867 and 80,221.04

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Solution

The fourth proportional to 137,583.28, 189,867 and 80,221.04 is: 110,706.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,583.28 : 189,867 = 80,221.04 : x
  2. Step 2: Convert to fraction form
    137,583.28/189,867 = 80,221.04/x
  3. Step 3: Cross multiply
    137,583.28x = 189,867 × 80,221.04
  4. Step 4: Simplify right side
    137,583.28x = 15,231,328,201.68
  5. Step 5: Solve for x
    x = 15,231,328,201.68/137,583.28
  6. Step 6: Final answer
    x = 110,706.24

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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.