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Finding the Fourth Proportional to 188,907.91, 260,692.50 and 102,865.55

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Solution

The fourth proportional to 188,907.91, 260,692.50 and 102,865.55 is: 141,954.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,907.91 : 260,692.50 = 102,865.55 : x
  2. Step 2: Convert to fraction form
    188,907.91/260,692.50 = 102,865.55/x
  3. Step 3: Cross multiply
    188,907.91x = 260,692.50 × 102,865.55
  4. Step 4: Simplify right side
    188,907.91x = 26,816,277,393.38
  5. Step 5: Solve for x
    x = 26,816,277,393.38/188,907.91
  6. Step 6: Final answer
    x = 141,954.23

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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.