Home / 188,928.51-260,716.27-102,885.78

Finding the Fourth Proportional to 188,928.51, 260,716.27 and 102,885.78

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Solution

The fourth proportional to 188,928.51, 260,716.27 and 102,885.78 is: 141,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,928.51 : 260,716.27 = 102,885.78 : x
  2. Step 2: Convert to fraction form
    188,928.51/260,716.27 = 102,885.78/x
  3. Step 3: Cross multiply
    188,928.51x = 260,716.27 × 102,885.78
  4. Step 4: Simplify right side
    188,928.51x = 26,823,996,797.64
  5. Step 5: Solve for x
    x = 26,823,996,797.64/188,928.51
  6. Step 6: Final answer
    x = 141,979.61

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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.