Home / 121,997.11-168,356-68,282.13

Finding the Fourth Proportional to 121,997.11, 168,356 and 68,282.13

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Solution

The fourth proportional to 121,997.11, 168,356 and 68,282.13 is: 94,229.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,997.11 : 168,356 = 68,282.13 : x
  2. Step 2: Convert to fraction form
    121,997.11/168,356 = 68,282.13/x
  3. Step 3: Cross multiply
    121,997.11x = 168,356 × 68,282.13
  4. Step 4: Simplify right side
    121,997.11x = 11,495,706,278.28
  5. Step 5: Solve for x
    x = 11,495,706,278.28/121,997.11
  6. Step 6: Final answer
    x = 94,229.33

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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.