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Finding the Fourth Proportional to 110,387.82, 166,319.31 and 99,871.19

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Solution

The fourth proportional to 110,387.82, 166,319.31 and 99,871.19 is: 150,474.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,387.82 : 166,319.31 = 99,871.19 : x
  2. Step 2: Convert to fraction form
    110,387.82/166,319.31 = 99,871.19/x
  3. Step 3: Cross multiply
    110,387.82x = 166,319.31 × 99,871.19
  4. Step 4: Simplify right side
    110,387.82x = 16,610,506,578.08
  5. Step 5: Solve for x
    x = 16,610,506,578.08/110,387.82
  6. Step 6: Final answer
    x = 150,474.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.