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Finding the Fourth Proportional to 125,765.76, 188,590.32 and 73,190.28

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Solution

The fourth proportional to 125,765.76, 188,590.32 and 73,190.28 is: 109,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,765.76 : 188,590.32 = 73,190.28 : x
  2. Step 2: Convert to fraction form
    125,765.76/188,590.32 = 73,190.28/x
  3. Step 3: Cross multiply
    125,765.76x = 188,590.32 × 73,190.28
  4. Step 4: Simplify right side
    125,765.76x = 13,802,978,326.09
  5. Step 5: Solve for x
    x = 13,802,978,326.09/125,765.76
  6. Step 6: Final answer
    x = 109,751.48

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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.