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Finding the Fourth Proportional to 129,775.20, 194,662.80 and 41,055.90

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Solution

The fourth proportional to 129,775.20, 194,662.80 and 41,055.90 is: 61,583.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,775.20 : 194,662.80 = 41,055.90 : x
  2. Step 2: Convert to fraction form
    129,775.20/194,662.80 = 41,055.90/x
  3. Step 3: Cross multiply
    129,775.20x = 194,662.80 × 41,055.90
  4. Step 4: Simplify right side
    129,775.20x = 7,992,056,450.52
  5. Step 5: Solve for x
    x = 7,992,056,450.52/129,775.20
  6. Step 6: Final answer
    x = 61,583.85

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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.