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Finding the Fourth Proportional to 200,167.34, 300,251.21 and 81,838.68

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Solution

The fourth proportional to 200,167.34, 300,251.21 and 81,838.68 is: 122,758.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,167.34 : 300,251.21 = 81,838.68 : x
  2. Step 2: Convert to fraction form
    200,167.34/300,251.21 = 81,838.68/x
  3. Step 3: Cross multiply
    200,167.34x = 300,251.21 × 81,838.68
  4. Step 4: Simplify right side
    200,167.34x = 24,572,162,694.80
  5. Step 5: Solve for x
    x = 24,572,162,694.80/200,167.34
  6. Step 6: Final answer
    x = 122,758.10

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1.5x scale

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.