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Finding the Fourth Proportional to 150,687.14, 207,976.92 and 99,700.88

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Solution

The fourth proportional to 150,687.14, 207,976.92 and 99,700.88 is: 137,606.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,687.14 : 207,976.92 = 99,700.88 : x
  2. Step 2: Convert to fraction form
    150,687.14/207,976.92 = 99,700.88/x
  3. Step 3: Cross multiply
    150,687.14x = 207,976.92 × 99,700.88
  4. Step 4: Simplify right side
    150,687.14x = 20,735,481,943.69
  5. Step 5: Solve for x
    x = 20,735,481,943.69/150,687.14
  6. Step 6: Final answer
    x = 137,606.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.