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Finding the Fourth Proportional to 192,792.97, 266,016.49 and 121,131.47

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Solution

The fourth proportional to 192,792.97, 266,016.49 and 121,131.47 is: 167,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,792.97 : 266,016.49 = 121,131.47 : x
  2. Step 2: Convert to fraction form
    192,792.97/266,016.49 = 121,131.47/x
  3. Step 3: Cross multiply
    192,792.97x = 266,016.49 × 121,131.47
  4. Step 4: Simplify right side
    192,792.97x = 32,222,968,840.15
  5. Step 5: Solve for x
    x = 32,222,968,840.15/192,792.97
  6. Step 6: Final answer
    x = 167,137.68

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1.5x scale

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.