Home / 123,480.08-170,403.03-66,891.45

Finding the Fourth Proportional to 123,480.08, 170,403.03 and 66,891.45

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Solution

The fourth proportional to 123,480.08, 170,403.03 and 66,891.45 is: 92,310.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,480.08 : 170,403.03 = 66,891.45 : x
  2. Step 2: Convert to fraction form
    123,480.08/170,403.03 = 66,891.45/x
  3. Step 3: Cross multiply
    123,480.08x = 170,403.03 × 66,891.45
  4. Step 4: Simplify right side
    123,480.08x = 11,398,505,761.09
  5. Step 5: Solve for x
    x = 11,398,505,761.09/123,480.08
  6. Step 6: Final answer
    x = 92,310.48

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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.