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Finding the Fourth Proportional to 121,034, 167,026.92 and 68,042

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Solution

The fourth proportional to 121,034, 167,026.92 and 68,042 is: 93,897.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,034 : 167,026.92 = 68,042 : x
  2. Step 2: Convert to fraction form
    121,034/167,026.92 = 68,042/x
  3. Step 3: Cross multiply
    121,034x = 167,026.92 × 68,042
  4. Step 4: Simplify right side
    121,034x = 11,364,845,690.64
  5. Step 5: Solve for x
    x = 11,364,845,690.64/121,034
  6. Step 6: Final answer
    x = 93,897.96

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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.