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Finding the Fourth Proportional to 123,777.84, 170,813.88 and 67,189.26

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Solution

The fourth proportional to 123,777.84, 170,813.88 and 67,189.26 is: 92,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,777.84 : 170,813.88 = 67,189.26 : x
  2. Step 2: Convert to fraction form
    123,777.84/170,813.88 = 67,189.26/x
  3. Step 3: Cross multiply
    123,777.84x = 170,813.88 × 67,189.26
  4. Step 4: Simplify right side
    123,777.84x = 11,476,858,194.93
  5. Step 5: Solve for x
    x = 11,476,858,194.93/123,777.84
  6. Step 6: Final answer
    x = 92,721.43

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1.5x scale

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.