Home / 137,582.28-189,865.58-80,220.06

Finding the Fourth Proportional to 137,582.28, 189,865.58 and 80,220.06

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Solution

The fourth proportional to 137,582.28, 189,865.58 and 80,220.06 is: 110,704.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,582.28 : 189,865.58 = 80,220.06 : x
  2. Step 2: Convert to fraction form
    137,582.28/189,865.58 = 80,220.06/x
  3. Step 3: Cross multiply
    137,582.28x = 189,865.58 × 80,220.06
  4. Step 4: Simplify right side
    137,582.28x = 15,231,027,818.43
  5. Step 5: Solve for x
    x = 15,231,027,818.43/137,582.28
  6. Step 6: Final answer
    x = 110,704.87

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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.