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Finding the Fourth Proportional to 100,723.40, 151,201.80 and 54,067.40

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Solution

The fourth proportional to 100,723.40, 151,201.80 and 54,067.40 is: 81,163.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,723.40 : 151,201.80 = 54,067.40 : x
  2. Step 2: Convert to fraction form
    100,723.40/151,201.80 = 54,067.40/x
  3. Step 3: Cross multiply
    100,723.40x = 151,201.80 × 54,067.40
  4. Step 4: Simplify right side
    100,723.40x = 8,175,088,201.32
  5. Step 5: Solve for x
    x = 8,175,088,201.32/100,723.40
  6. Step 6: Final answer
    x = 81,163.74

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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.