Home / 136,949.62-188,971.66-76,512.76

Finding the Fourth Proportional to 136,949.62, 188,971.66 and 76,512.76

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Solution

The fourth proportional to 136,949.62, 188,971.66 and 76,512.76 is: 105,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,949.62 : 188,971.66 = 76,512.76 : x
  2. Step 2: Convert to fraction form
    136,949.62/188,971.66 = 76,512.76/x
  3. Step 3: Cross multiply
    136,949.62x = 188,971.66 × 76,512.76
  4. Step 4: Simplify right side
    136,949.62x = 14,458,743,268.38
  5. Step 5: Solve for x
    x = 14,458,743,268.38/136,949.62
  6. Step 6: Final answer
    x = 105,577.10

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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.