Home / 123,480.39-170,402.95-66,891.76

Finding the Fourth Proportional to 123,480.39, 170,402.95 and 66,891.76

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Solution

The fourth proportional to 123,480.39, 170,402.95 and 66,891.76 is: 92,310.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,480.39 : 170,402.95 = 66,891.76 : x
  2. Step 2: Convert to fraction form
    123,480.39/170,402.95 = 66,891.76/x
  3. Step 3: Cross multiply
    123,480.39x = 170,402.95 × 66,891.76
  4. Step 4: Simplify right side
    123,480.39x = 11,398,553,531.31
  5. Step 5: Solve for x
    x = 11,398,553,531.31/123,480.39
  6. Step 6: Final answer
    x = 92,310.64

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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.