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Finding the Fourth Proportional to 123,080.05, 169,850.64 and 66,491.44

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Solution

The fourth proportional to 123,080.05, 169,850.64 and 66,491.44 is: 91,758.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,080.05 : 169,850.64 = 66,491.44 : x
  2. Step 2: Convert to fraction form
    123,080.05/169,850.64 = 66,491.44/x
  3. Step 3: Cross multiply
    123,080.05x = 169,850.64 × 66,491.44
  4. Step 4: Simplify right side
    123,080.05x = 11,293,613,638.52
  5. Step 5: Solve for x
    x = 11,293,613,638.52/123,080.05
  6. Step 6: Final answer
    x = 91,758.28

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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.