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Finding the Fourth Proportional to 123,549, 170,497.98 and 66,960.60

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Solution

The fourth proportional to 123,549, 170,497.98 and 66,960.60 is: 92,405.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,549 : 170,497.98 = 66,960.60 : x
  2. Step 2: Convert to fraction form
    123,549/170,497.98 = 66,960.60/x
  3. Step 3: Cross multiply
    123,549x = 170,497.98 × 66,960.60
  4. Step 4: Simplify right side
    123,549x = 11,416,647,039.59
  5. Step 5: Solve for x
    x = 11,416,647,039.59/123,549
  6. Step 6: Final answer
    x = 92,405.82

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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.