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Finding the Fourth Proportional to 129,883.60, 194,836.49 and 45,636.46

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Solution

The fourth proportional to 129,883.60, 194,836.49 and 45,636.46 is: 68,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,883.60 : 194,836.49 = 45,636.46 : x
  2. Step 2: Convert to fraction form
    129,883.60/194,836.49 = 45,636.46/x
  3. Step 3: Cross multiply
    129,883.60x = 194,836.49 × 45,636.46
  4. Step 4: Simplify right side
    129,883.60x = 8,891,648,234.24
  5. Step 5: Solve for x
    x = 8,891,648,234.24/129,883.60
  6. Step 6: Final answer
    x = 68,458.59

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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.