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Finding the Fourth Proportional to 200,090.20, 299,732.10 and 124,979.80

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Solution

The fourth proportional to 200,090.20, 299,732.10 and 124,979.80 is: 187,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,090.20 : 299,732.10 = 124,979.80 : x
  2. Step 2: Convert to fraction form
    200,090.20/299,732.10 = 124,979.80/x
  3. Step 3: Cross multiply
    200,090.20x = 299,732.10 × 124,979.80
  4. Step 4: Simplify right side
    200,090.20x = 37,460,457,911.58
  5. Step 5: Solve for x
    x = 37,460,457,911.58/200,090.20
  6. Step 6: Final answer
    x = 187,217.85

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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.