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Finding the Fourth Proportional to 129,979.88, 194,969.82 and 46,873.88

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Solution

The fourth proportional to 129,979.88, 194,969.82 and 46,873.88 is: 70,310.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,979.88 : 194,969.82 = 46,873.88 : x
  2. Step 2: Convert to fraction form
    129,979.88/194,969.82 = 46,873.88/x
  3. Step 3: Cross multiply
    129,979.88x = 194,969.82 × 46,873.88
  4. Step 4: Simplify right side
    129,979.88x = 9,138,991,946.30
  5. Step 5: Solve for x
    x = 9,138,991,946.30/129,979.88
  6. Step 6: Final answer
    x = 70,310.82

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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.