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Finding the Fourth Proportional to 120,815.60, 181,266.60 and 50,716.40

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Solution

The fourth proportional to 120,815.60, 181,266.60 and 50,716.40 is: 76,092.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,815.60 : 181,266.60 = 50,716.40 : x
  2. Step 2: Convert to fraction form
    120,815.60/181,266.60 = 50,716.40/x
  3. Step 3: Cross multiply
    120,815.60x = 181,266.60 × 50,716.40
  4. Step 4: Simplify right side
    120,815.60x = 9,193,189,392.24
  5. Step 5: Solve for x
    x = 9,193,189,392.24/120,815.60
  6. Step 6: Final answer
    x = 76,092.73

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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.