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Finding the Fourth Proportional to 123,776.28, 170,810.10 and 67,186.44

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Solution

The fourth proportional to 123,776.28, 170,810.10 and 67,186.44 is: 92,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,776.28 : 170,810.10 = 67,186.44 : x
  2. Step 2: Convert to fraction form
    123,776.28/170,810.10 = 67,186.44/x
  3. Step 3: Cross multiply
    123,776.28x = 170,810.10 × 67,186.44
  4. Step 4: Simplify right side
    123,776.28x = 11,476,122,535.04
  5. Step 5: Solve for x
    x = 11,476,122,535.04/123,776.28
  6. Step 6: Final answer
    x = 92,716.65

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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.