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Finding the Fourth Proportional to 125,512.60, 188,267.70 and 30,743.20

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Solution

The fourth proportional to 125,512.60, 188,267.70 and 30,743.20 is: 46,114.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,512.60 : 188,267.70 = 30,743.20 : x
  2. Step 2: Convert to fraction form
    125,512.60/188,267.70 = 30,743.20/x
  3. Step 3: Cross multiply
    125,512.60x = 188,267.70 × 30,743.20
  4. Step 4: Simplify right side
    125,512.60x = 5,787,951,554.64
  5. Step 5: Solve for x
    x = 5,787,951,554.64/125,512.60
  6. Step 6: Final answer
    x = 46,114.51

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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.