Home / 121,705.11-167,953.68-67,992.39

Finding the Fourth Proportional to 121,705.11, 167,953.68 and 67,992.39

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Solution

The fourth proportional to 121,705.11, 167,953.68 and 67,992.39 is: 93,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,705.11 : 167,953.68 = 67,992.39 : x
  2. Step 2: Convert to fraction form
    121,705.11/167,953.68 = 67,992.39/x
  3. Step 3: Cross multiply
    121,705.11x = 167,953.68 × 67,992.39
  4. Step 4: Simplify right side
    121,705.11x = 11,419,572,112.50
  5. Step 5: Solve for x
    x = 11,419,572,112.50/121,705.11
  6. Step 6: Final answer
    x = 93,829.85

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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.