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Finding the Fourth Proportional to 205,483.18, 308,171.31 and 87,093.58

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Solution

The fourth proportional to 205,483.18, 308,171.31 and 87,093.58 is: 130,617.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,483.18 : 308,171.31 = 87,093.58 : x
  2. Step 2: Convert to fraction form
    205,483.18/308,171.31 = 87,093.58/x
  3. Step 3: Cross multiply
    205,483.18x = 308,171.31 × 87,093.58
  4. Step 4: Simplify right side
    205,483.18x = 26,839,741,544.16
  5. Step 5: Solve for x
    x = 26,839,741,544.16/205,483.18
  6. Step 6: Final answer
    x = 130,617.71

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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.