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Finding the Fourth Proportional to 121,022, 167,010.36 and 68,030

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Solution

The fourth proportional to 121,022, 167,010.36 and 68,030 is: 93,881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,022 : 167,010.36 = 68,030 : x
  2. Step 2: Convert to fraction form
    121,022/167,010.36 = 68,030/x
  3. Step 3: Cross multiply
    121,022x = 167,010.36 × 68,030
  4. Step 4: Simplify right side
    121,022x = 11,361,714,790.80
  5. Step 5: Solve for x
    x = 11,361,714,790.80/121,022
  6. Step 6: Final answer
    x = 93,881.40

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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.