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Finding the Fourth Proportional to 123,858.53, 170,918.39 and 67,269.77

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Solution

The fourth proportional to 123,858.53, 170,918.39 and 67,269.77 is: 92,828.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,858.53 : 170,918.39 = 67,269.77 : x
  2. Step 2: Convert to fraction form
    123,858.53/170,918.39 = 67,269.77/x
  3. Step 3: Cross multiply
    123,858.53x = 170,918.39 × 67,269.77
  4. Step 4: Simplify right side
    123,858.53x = 11,497,640,784.07
  5. Step 5: Solve for x
    x = 11,497,640,784.07/123,858.53
  6. Step 6: Final answer
    x = 92,828.82

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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.