Home / 121,891.07-168,218.47-68,193.38

Finding the Fourth Proportional to 121,891.07, 168,218.47 and 68,193.38

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Solution

The fourth proportional to 121,891.07, 168,218.47 and 68,193.38 is: 94,111.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,891.07 : 168,218.47 = 68,193.38 : x
  2. Step 2: Convert to fraction form
    121,891.07/168,218.47 = 68,193.38/x
  3. Step 3: Cross multiply
    121,891.07x = 168,218.47 × 68,193.38
  4. Step 4: Simplify right side
    121,891.07x = 11,471,385,206.64
  5. Step 5: Solve for x
    x = 11,471,385,206.64/121,891.07
  6. Step 6: Final answer
    x = 94,111.78

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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.