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Finding the Fourth Proportional to 169,672.17, 254,120.68 and 80,988.11

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Solution

The fourth proportional to 169,672.17, 254,120.68 and 80,988.11 is: 121,297.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,672.17 : 254,120.68 = 80,988.11 : x
  2. Step 2: Convert to fraction form
    169,672.17/254,120.68 = 80,988.11/x
  3. Step 3: Cross multiply
    169,672.17x = 254,120.68 × 80,988.11
  4. Step 4: Simplify right side
    169,672.17x = 20,580,752,913.14
  5. Step 5: Solve for x
    x = 20,580,752,913.14/169,672.17
  6. Step 6: Final answer
    x = 121,297.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.