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Finding the Fourth Proportional to 168,692.87, 252,072.29 and 128,488.52

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Solution

The fourth proportional to 168,692.87, 252,072.29 and 128,488.52 is: 191,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,692.87 : 252,072.29 = 128,488.52 : x
  2. Step 2: Convert to fraction form
    168,692.87/252,072.29 = 128,488.52/x
  3. Step 3: Cross multiply
    168,692.87x = 252,072.29 × 128,488.52
  4. Step 4: Simplify right side
    168,692.87x = 32,388,393,572.31
  5. Step 5: Solve for x
    x = 32,388,393,572.31/168,692.87
  6. Step 6: Final answer
    x = 191,996.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.