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Finding the Fourth Proportional to 121,016.66, 167,007.04 and 66,571.11

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Solution

The fourth proportional to 121,016.66, 167,007.04 and 66,571.11 is: 91,870.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,016.66 : 167,007.04 = 66,571.11 : x
  2. Step 2: Convert to fraction form
    121,016.66/167,007.04 = 66,571.11/x
  3. Step 3: Cross multiply
    121,016.66x = 167,007.04 × 66,571.11
  4. Step 4: Simplify right side
    121,016.66x = 11,117,843,864.19
  5. Step 5: Solve for x
    x = 11,117,843,864.19/121,016.66
  6. Step 6: Final answer
    x = 91,870.36

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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.