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Finding the Fourth Proportional to 123,805.64, 170,851.78 and 67,217.02

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Solution

The fourth proportional to 123,805.64, 170,851.78 and 67,217.02 is: 92,759.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,805.64 : 170,851.78 = 67,217.02 : x
  2. Step 2: Convert to fraction form
    123,805.64/170,851.78 = 67,217.02/x
  3. Step 3: Cross multiply
    123,805.64x = 170,851.78 × 67,217.02
  4. Step 4: Simplify right side
    123,805.64x = 11,484,147,513.30
  5. Step 5: Solve for x
    x = 11,484,147,513.30/123,805.64
  6. Step 6: Final answer
    x = 92,759.49

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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.