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Finding the Fourth Proportional to 121,379.04, 167,503.10 and 67,662.90

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Solution

The fourth proportional to 121,379.04, 167,503.10 and 67,662.90 is: 93,374.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,379.04 : 167,503.10 = 67,662.90 : x
  2. Step 2: Convert to fraction form
    121,379.04/167,503.10 = 67,662.90/x
  3. Step 3: Cross multiply
    121,379.04x = 167,503.10 × 67,662.90
  4. Step 4: Simplify right side
    121,379.04x = 11,333,745,166.68
  5. Step 5: Solve for x
    x = 11,333,745,166.68/121,379.04
  6. Step 6: Final answer
    x = 93,374.81

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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.