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Finding the Fourth Proportional to 123,859.60, 170,923.44 and 67,269.76

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Solution

The fourth proportional to 123,859.60, 170,923.44 and 67,269.76 is: 92,830.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,859.60 : 170,923.44 = 67,269.76 : x
  2. Step 2: Convert to fraction form
    123,859.60/170,923.44 = 67,269.76/x
  3. Step 3: Cross multiply
    123,859.60x = 170,923.44 × 67,269.76
  4. Step 4: Simplify right side
    123,859.60x = 11,497,978,787.17
  5. Step 5: Solve for x
    x = 11,497,978,787.17/123,859.60
  6. Step 6: Final answer
    x = 92,830.74

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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.