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Finding the Fourth Proportional to 129,940.47, 194,917.68 and 41,200.89

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Solution

The fourth proportional to 129,940.47, 194,917.68 and 41,200.89 is: 61,803.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,940.47 : 194,917.68 = 41,200.89 : x
  2. Step 2: Convert to fraction form
    129,940.47/194,917.68 = 41,200.89/x
  3. Step 3: Cross multiply
    129,940.47x = 194,917.68 × 41,200.89
  4. Step 4: Simplify right side
    129,940.47x = 8,030,782,180.95
  5. Step 5: Solve for x
    x = 8,030,782,180.95/129,940.47
  6. Step 6: Final answer
    x = 61,803.55

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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.