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Finding the Fourth Proportional to 171,711.80, 236,968.44 and 100,080.28

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Solution

The fourth proportional to 171,711.80, 236,968.44 and 100,080.28 is: 138,114.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,711.80 : 236,968.44 = 100,080.28 : x
  2. Step 2: Convert to fraction form
    171,711.80/236,968.44 = 100,080.28/x
  3. Step 3: Cross multiply
    171,711.80x = 236,968.44 × 100,080.28
  4. Step 4: Simplify right side
    171,711.80x = 23,715,867,826.36
  5. Step 5: Solve for x
    x = 23,715,867,826.36/171,711.80
  6. Step 6: Final answer
    x = 138,114.37

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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.