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Finding the Fourth Proportional to 121,019.49, 166,994.10 and 67,295.84

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Solution

The fourth proportional to 121,019.49, 166,994.10 and 67,295.84 is: 92,861.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,019.49 : 166,994.10 = 67,295.84 : x
  2. Step 2: Convert to fraction form
    121,019.49/166,994.10 = 67,295.84/x
  3. Step 3: Cross multiply
    121,019.49x = 166,994.10 × 67,295.84
  4. Step 4: Simplify right side
    121,019.49x = 11,238,007,399.57
  5. Step 5: Solve for x
    x = 11,238,007,399.57/121,019.49
  6. Step 6: Final answer
    x = 92,861.14

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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.