Home / 204,988.30-307,540.05-99,810.70

Finding the Fourth Proportional to 204,988.30, 307,540.05 and 99,810.70

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Solution

The fourth proportional to 204,988.30, 307,540.05 and 99,810.70 is: 149,744.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,988.30 : 307,540.05 = 99,810.70 : x
  2. Step 2: Convert to fraction form
    204,988.30/307,540.05 = 99,810.70/x
  3. Step 3: Cross multiply
    204,988.30x = 307,540.05 × 99,810.70
  4. Step 4: Simplify right side
    204,988.30x = 30,695,787,668.54
  5. Step 5: Solve for x
    x = 30,695,787,668.54/204,988.30
  6. Step 6: Final answer
    x = 149,744.10

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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.