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Finding the Fourth Proportional to 188,760.96, 260,489.95 and 103,878.02

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Solution

The fourth proportional to 188,760.96, 260,489.95 and 103,878.02 is: 143,351.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,760.96 : 260,489.95 = 103,878.02 : x
  2. Step 2: Convert to fraction form
    188,760.96/260,489.95 = 103,878.02/x
  3. Step 3: Cross multiply
    188,760.96x = 260,489.95 × 103,878.02
  4. Step 4: Simplify right side
    188,760.96x = 27,059,180,627.43
  5. Step 5: Solve for x
    x = 27,059,180,627.43/188,760.96
  6. Step 6: Final answer
    x = 143,351.57

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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.