Home / 139,874.28-209,562.66-80,587.46

Finding the Fourth Proportional to 139,874.28, 209,562.66 and 80,587.46

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Solution

The fourth proportional to 139,874.28, 209,562.66 and 80,587.46 is: 120,737.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,874.28 : 209,562.66 = 80,587.46 : x
  2. Step 2: Convert to fraction form
    139,874.28/209,562.66 = 80,587.46/x
  3. Step 3: Cross multiply
    139,874.28x = 209,562.66 × 80,587.46
  4. Step 4: Simplify right side
    139,874.28x = 16,888,122,480.24
  5. Step 5: Solve for x
    x = 16,888,122,480.24/139,874.28
  6. Step 6: Final answer
    x = 120,737.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.