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Finding the Fourth Proportional to 121,713.49, 167,968.04 and 68,004.42

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Solution

The fourth proportional to 121,713.49, 167,968.04 and 68,004.42 is: 93,848.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,713.49 : 167,968.04 = 68,004.42 : x
  2. Step 2: Convert to fraction form
    121,713.49/167,968.04 = 68,004.42/x
  3. Step 3: Cross multiply
    121,713.49x = 167,968.04 × 68,004.42
  4. Step 4: Simplify right side
    121,713.49x = 11,422,569,138.74
  5. Step 5: Solve for x
    x = 11,422,569,138.74/121,713.49
  6. Step 6: Final answer
    x = 93,848.01

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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.