Home / 139,392.28-209,102.10-80,113.24

Finding the Fourth Proportional to 139,392.28, 209,102.10 and 80,113.24

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Solution

The fourth proportional to 139,392.28, 209,102.10 and 80,113.24 is: 120,177.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,392.28 : 209,102.10 = 80,113.24 : x
  2. Step 2: Convert to fraction form
    139,392.28/209,102.10 = 80,113.24/x
  3. Step 3: Cross multiply
    139,392.28x = 209,102.10 × 80,113.24
  4. Step 4: Simplify right side
    139,392.28x = 16,751,846,721.80
  5. Step 5: Solve for x
    x = 16,751,846,721.80/139,392.28
  6. Step 6: Final answer
    x = 120,177.72

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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.