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Finding the Fourth Proportional to 121,727.68, 167,992.89 and 67,278.68

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Solution

The fourth proportional to 121,727.68, 167,992.89 and 67,278.68 is: 92,849.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,727.68 : 167,992.89 = 67,278.68 : x
  2. Step 2: Convert to fraction form
    121,727.68/167,992.89 = 67,278.68/x
  3. Step 3: Cross multiply
    121,727.68x = 167,992.89 × 67,278.68
  4. Step 4: Simplify right side
    121,727.68x = 11,302,339,662.54
  5. Step 5: Solve for x
    x = 11,302,339,662.54/121,727.68
  6. Step 6: Final answer
    x = 92,849.38

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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.