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Finding the Fourth Proportional to 150,198.72, 207,266 and 85,658.48

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Solution

The fourth proportional to 150,198.72, 207,266 and 85,658.48 is: 118,204.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,198.72 : 207,266 = 85,658.48 : x
  2. Step 2: Convert to fraction form
    150,198.72/207,266 = 85,658.48/x
  3. Step 3: Cross multiply
    150,198.72x = 207,266 × 85,658.48
  4. Step 4: Simplify right side
    150,198.72x = 17,754,090,515.68
  5. Step 5: Solve for x
    x = 17,754,090,515.68/150,198.72
  6. Step 6: Final answer
    x = 118,204.01

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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.