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Finding the Fourth Proportional to 129,578.30, 194,394.72 and 73,445.30

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Solution

The fourth proportional to 129,578.30, 194,394.72 and 73,445.30 is: 110,183.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,578.30 : 194,394.72 = 73,445.30 : x
  2. Step 2: Convert to fraction form
    129,578.30/194,394.72 = 73,445.30/x
  3. Step 3: Cross multiply
    129,578.30x = 194,394.72 × 73,445.30
  4. Step 4: Simplify right side
    129,578.30x = 14,277,378,528.82
  5. Step 5: Solve for x
    x = 14,277,378,528.82/129,578.30
  6. Step 6: Final answer
    x = 110,183.41

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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.