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Finding the Fourth Proportional to 121,010.69, 166,994.85 and 67,294.53

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Solution

The fourth proportional to 121,010.69, 166,994.85 and 67,294.53 is: 92,866.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,010.69 : 166,994.85 = 67,294.53 : x
  2. Step 2: Convert to fraction form
    121,010.69/166,994.85 = 67,294.53/x
  3. Step 3: Cross multiply
    121,010.69x = 166,994.85 × 67,294.53
  4. Step 4: Simplify right side
    121,010.69x = 11,237,839,943.17
  5. Step 5: Solve for x
    x = 11,237,839,943.17/121,010.69
  6. Step 6: Final answer
    x = 92,866.51

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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.