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Finding the Fourth Proportional to 121,608, 167,819.04 and 68,616

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Solution

The fourth proportional to 121,608, 167,819.04 and 68,616 is: 94,690.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,608 : 167,819.04 = 68,616 : x
  2. Step 2: Convert to fraction form
    121,608/167,819.04 = 68,616/x
  3. Step 3: Cross multiply
    121,608x = 167,819.04 × 68,616
  4. Step 4: Simplify right side
    121,608x = 11,515,071,248.64
  5. Step 5: Solve for x
    x = 11,515,071,248.64/121,608
  6. Step 6: Final answer
    x = 94,690.08

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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.