Home / 120,922.12-181,081.50-76,414.60

Finding the Fourth Proportional to 120,922.12, 181,081.50 and 76,414.60

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Solution

The fourth proportional to 120,922.12, 181,081.50 and 76,414.60 is: 114,431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,922.12 : 181,081.50 = 76,414.60 : x
  2. Step 2: Convert to fraction form
    120,922.12/181,081.50 = 76,414.60/x
  3. Step 3: Cross multiply
    120,922.12x = 181,081.50 × 76,414.60
  4. Step 4: Simplify right side
    120,922.12x = 13,837,270,389.90
  5. Step 5: Solve for x
    x = 13,837,270,389.90/120,922.12
  6. Step 6: Final answer
    x = 114,431.26

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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.