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Finding the Fourth Proportional to 185,689.97, 278,535.41 and 67,361.42

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Solution

The fourth proportional to 185,689.97, 278,535.41 and 67,361.42 is: 101,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,689.97 : 278,535.41 = 67,361.42 : x
  2. Step 2: Convert to fraction form
    185,689.97/278,535.41 = 67,361.42/x
  3. Step 3: Cross multiply
    185,689.97x = 278,535.41 × 67,361.42
  4. Step 4: Simplify right side
    185,689.97x = 18,762,541,350.02
  5. Step 5: Solve for x
    x = 18,762,541,350.02/185,689.97
  6. Step 6: Final answer
    x = 101,042.30

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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.