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Finding the Fourth Proportional to 188,842.78, 283,236.21 and 68,871.59

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Solution

The fourth proportional to 188,842.78, 283,236.21 and 68,871.59 is: 103,297.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,842.78 : 283,236.21 = 68,871.59 : x
  2. Step 2: Convert to fraction form
    188,842.78/283,236.21 = 68,871.59/x
  3. Step 3: Cross multiply
    188,842.78x = 283,236.21 × 68,871.59
  4. Step 4: Simplify right side
    188,842.78x = 19,506,928,280.28
  5. Step 5: Solve for x
    x = 19,506,928,280.28/188,842.78
  6. Step 6: Final answer
    x = 103,297.19

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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.