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Finding the Fourth Proportional to 169,437.80, 253,991.40 and 80,667.44

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Solution

The fourth proportional to 169,437.80, 253,991.40 and 80,667.44 is: 120,922.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,437.80 : 253,991.40 = 80,667.44 : x
  2. Step 2: Convert to fraction form
    169,437.80/253,991.40 = 80,667.44/x
  3. Step 3: Cross multiply
    169,437.80x = 253,991.40 × 80,667.44
  4. Step 4: Simplify right side
    169,437.80x = 20,488,836,020.02
  5. Step 5: Solve for x
    x = 20,488,836,020.02/169,437.80
  6. Step 6: Final answer
    x = 120,922.46

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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.