Home / 121,936.13-168,278.40-68,217.94

Finding the Fourth Proportional to 121,936.13, 168,278.40 and 68,217.94

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Solution

The fourth proportional to 121,936.13, 168,278.40 and 68,217.94 is: 94,144.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,936.13 : 168,278.40 = 68,217.94 : x
  2. Step 2: Convert to fraction form
    121,936.13/168,278.40 = 68,217.94/x
  3. Step 3: Cross multiply
    121,936.13x = 168,278.40 × 68,217.94
  4. Step 4: Simplify right side
    121,936.13x = 11,479,606,004.84
  5. Step 5: Solve for x
    x = 11,479,606,004.84/121,936.13
  6. Step 6: Final answer
    x = 94,144.42

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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.