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Finding the Fourth Proportional to 121,693, 167,936.34 and 68,701

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Solution

The fourth proportional to 121,693, 167,936.34 and 68,701 is: 94,807.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,693 : 167,936.34 = 68,701 : x
  2. Step 2: Convert to fraction form
    121,693/167,936.34 = 68,701/x
  3. Step 3: Cross multiply
    121,693x = 167,936.34 × 68,701
  4. Step 4: Simplify right side
    121,693x = 11,537,394,494.34
  5. Step 5: Solve for x
    x = 11,537,394,494.34/121,693
  6. Step 6: Final answer
    x = 94,807.38

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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.