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Finding the Fourth Proportional to 129,759.68, 194,629.80 and 36,272.72

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Solution

The fourth proportional to 129,759.68, 194,629.80 and 36,272.72 is: 54,406.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,759.68 : 194,629.80 = 36,272.72 : x
  2. Step 2: Convert to fraction form
    129,759.68/194,629.80 = 36,272.72/x
  3. Step 3: Cross multiply
    129,759.68x = 194,629.80 × 36,272.72
  4. Step 4: Simplify right side
    129,759.68x = 7,059,752,239.06
  5. Step 5: Solve for x
    x = 7,059,752,239.06/129,759.68
  6. Step 6: Final answer
    x = 54,406.36

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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.