Home / 120,625.20-180,850.32-81,084.24

Finding the Fourth Proportional to 120,625.20, 180,850.32 and 81,084.24

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Solution

The fourth proportional to 120,625.20, 180,850.32 and 81,084.24 is: 121,567.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,625.20 : 180,850.32 = 81,084.24 : x
  2. Step 2: Convert to fraction form
    120,625.20/180,850.32 = 81,084.24/x
  3. Step 3: Cross multiply
    120,625.20x = 180,850.32 × 81,084.24
  4. Step 4: Simplify right side
    120,625.20x = 14,664,110,750.96
  5. Step 5: Solve for x
    x = 14,664,110,750.96/120,625.20
  6. Step 6: Final answer
    x = 121,567.56

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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.