Home / 80,512.23-120,787.32-79,173.39

Finding the Fourth Proportional to 80,512.23, 120,787.32 and 79,173.39

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Solution

The fourth proportional to 80,512.23, 120,787.32 and 79,173.39 is: 118,778.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,512.23 : 120,787.32 = 79,173.39 : x
  2. Step 2: Convert to fraction form
    80,512.23/120,787.32 = 79,173.39/x
  3. Step 3: Cross multiply
    80,512.23x = 120,787.32 × 79,173.39
  4. Step 4: Simplify right side
    80,512.23x = 9,563,141,593.41
  5. Step 5: Solve for x
    x = 9,563,141,593.41/80,512.23
  6. Step 6: Final answer
    x = 118,778.74

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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.