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Finding the Fourth Proportional to 123,710.68, 170,716.17 and 67,120.84

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Solution

The fourth proportional to 123,710.68, 170,716.17 and 67,120.84 is: 92,624.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,710.68 : 170,716.17 = 67,120.84 : x
  2. Step 2: Convert to fraction form
    123,710.68/170,716.17 = 67,120.84/x
  3. Step 3: Cross multiply
    123,710.68x = 170,716.17 × 67,120.84
  4. Step 4: Simplify right side
    123,710.68x = 11,458,612,731.98
  5. Step 5: Solve for x
    x = 11,458,612,731.98/123,710.68
  6. Step 6: Final answer
    x = 92,624.28

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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.