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Finding the Fourth Proportional to 125,467.20, 188,200.80 and 115,747.20

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Solution

The fourth proportional to 125,467.20, 188,200.80 and 115,747.20 is: 173,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,467.20 : 188,200.80 = 115,747.20 : x
  2. Step 2: Convert to fraction form
    125,467.20/188,200.80 = 115,747.20/x
  3. Step 3: Cross multiply
    125,467.20x = 188,200.80 × 115,747.20
  4. Step 4: Simplify right side
    125,467.20x = 21,783,715,637.76
  5. Step 5: Solve for x
    x = 21,783,715,637.76/125,467.20
  6. Step 6: Final answer
    x = 173,620.80

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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.