Home / 121,119.73-167,144-67,403.83

Finding the Fourth Proportional to 121,119.73, 167,144 and 67,403.83

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Solution

The fourth proportional to 121,119.73, 167,144 and 67,403.83 is: 93,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,119.73 : 167,144 = 67,403.83 : x
  2. Step 2: Convert to fraction form
    121,119.73/167,144 = 67,403.83/x
  3. Step 3: Cross multiply
    121,119.73x = 167,144 × 67,403.83
  4. Step 4: Simplify right side
    121,119.73x = 11,266,145,761.52
  5. Step 5: Solve for x
    x = 11,266,145,761.52/121,119.73
  6. Step 6: Final answer
    x = 93,016.60

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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.