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Finding the Fourth Proportional to 199,030.20, 297,767.70 and 129,046.20

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Solution

The fourth proportional to 199,030.20, 297,767.70 and 129,046.20 is: 193,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,030.20 : 297,767.70 = 129,046.20 : x
  2. Step 2: Convert to fraction form
    199,030.20/297,767.70 = 129,046.20/x
  3. Step 3: Cross multiply
    199,030.20x = 297,767.70 × 129,046.20
  4. Step 4: Simplify right side
    199,030.20x = 38,425,790,167.74
  5. Step 5: Solve for x
    x = 38,425,790,167.74/199,030.20
  6. Step 6: Final answer
    x = 193,065.12

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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.