Home / 121,667.30-167,884.28-67,945.47

Finding the Fourth Proportional to 121,667.30, 167,884.28 and 67,945.47

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Solution

The fourth proportional to 121,667.30, 167,884.28 and 67,945.47 is: 93,755.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,667.30 : 167,884.28 = 67,945.47 : x
  2. Step 2: Convert to fraction form
    121,667.30/167,884.28 = 67,945.47/x
  3. Step 3: Cross multiply
    121,667.30x = 167,884.28 × 67,945.47
  4. Step 4: Simplify right side
    121,667.30x = 11,406,975,470.79
  5. Step 5: Solve for x
    x = 11,406,975,470.79/121,667.30
  6. Step 6: Final answer
    x = 93,755.47

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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.