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Finding the Fourth Proportional to 121,106.63, 167,127.15 and 68,114.63

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Solution

The fourth proportional to 121,106.63, 167,127.15 and 68,114.63 is: 93,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,106.63 : 167,127.15 = 68,114.63 : x
  2. Step 2: Convert to fraction form
    121,106.63/167,127.15 = 68,114.63/x
  3. Step 3: Cross multiply
    121,106.63x = 167,127.15 × 68,114.63
  4. Step 4: Simplify right side
    121,106.63x = 11,383,803,149.57
  5. Step 5: Solve for x
    x = 11,383,803,149.57/121,106.63
  6. Step 6: Final answer
    x = 93,998.19

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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.