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Finding the Fourth Proportional to 138,361.64, 207,542.52 and 106,817.77

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Solution

The fourth proportional to 138,361.64, 207,542.52 and 106,817.77 is: 160,226.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,361.64 : 207,542.52 = 106,817.77 : x
  2. Step 2: Convert to fraction form
    138,361.64/207,542.52 = 106,817.77/x
  3. Step 3: Cross multiply
    138,361.64x = 207,542.52 × 106,817.77
  4. Step 4: Simplify right side
    138,361.64x = 22,169,229,166.58
  5. Step 5: Solve for x
    x = 22,169,229,166.58/138,361.64
  6. Step 6: Final answer
    x = 160,226.70

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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.