Home / 123,180.12-169,988.60-66,591.49

Finding the Fourth Proportional to 123,180.12, 169,988.60 and 66,591.49

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Solution

The fourth proportional to 123,180.12, 169,988.60 and 66,591.49 is: 91,896.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,180.12 : 169,988.60 = 66,591.49 : x
  2. Step 2: Convert to fraction form
    123,180.12/169,988.60 = 66,591.49/x
  3. Step 3: Cross multiply
    123,180.12x = 169,988.60 × 66,591.49
  4. Step 4: Simplify right side
    123,180.12x = 11,319,794,508.05
  5. Step 5: Solve for x
    x = 11,319,794,508.05/123,180.12
  6. Step 6: Final answer
    x = 91,896.28

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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.