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Finding the Fourth Proportional to 121,080.43, 166,916.02 and 80,176.11

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Solution

The fourth proportional to 121,080.43, 166,916.02 and 80,176.11 is: 110,527.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,080.43 : 166,916.02 = 80,176.11 : x
  2. Step 2: Convert to fraction form
    121,080.43/166,916.02 = 80,176.11/x
  3. Step 3: Cross multiply
    121,080.43x = 166,916.02 × 80,176.11
  4. Step 4: Simplify right side
    121,080.43x = 13,382,677,180.28
  5. Step 5: Solve for x
    x = 13,382,677,180.28/121,080.43
  6. Step 6: Final answer
    x = 110,527.17

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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.