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Finding the Fourth Proportional to 154,544.98, 213,274.21 and 100,799.15

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Solution

The fourth proportional to 154,544.98, 213,274.21 and 100,799.15 is: 139,104.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,544.98 : 213,274.21 = 100,799.15 : x
  2. Step 2: Convert to fraction form
    154,544.98/213,274.21 = 100,799.15/x
  3. Step 3: Cross multiply
    154,544.98x = 213,274.21 × 100,799.15
  4. Step 4: Simplify right side
    154,544.98x = 21,497,858,871.72
  5. Step 5: Solve for x
    x = 21,497,858,871.72/154,544.98
  6. Step 6: Final answer
    x = 139,104.22

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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.