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Finding the Fourth Proportional to 143,843.37, 198,422.56 and 90,034.96

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Solution

The fourth proportional to 143,843.37, 198,422.56 and 90,034.96 is: 124,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,843.37 : 198,422.56 = 90,034.96 : x
  2. Step 2: Convert to fraction form
    143,843.37/198,422.56 = 90,034.96/x
  3. Step 3: Cross multiply
    143,843.37x = 198,422.56 × 90,034.96
  4. Step 4: Simplify right side
    143,843.37x = 17,864,967,252.70
  5. Step 5: Solve for x
    x = 17,864,967,252.70/143,843.37
  6. Step 6: Final answer
    x = 124,197.36

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1.5x scale

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.