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Finding the Fourth Proportional to 188,489.92, 260,114.56 and 103,606.08

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Solution

The fourth proportional to 188,489.92, 260,114.56 and 103,606.08 is: 142,975.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,489.92 : 260,114.56 = 103,606.08 : x
  2. Step 2: Convert to fraction form
    188,489.92/260,114.56 = 103,606.08/x
  3. Step 3: Cross multiply
    188,489.92x = 260,114.56 × 103,606.08
  4. Step 4: Simplify right side
    188,489.92x = 26,949,449,912.52
  5. Step 5: Solve for x
    x = 26,949,449,912.52/188,489.92
  6. Step 6: Final answer
    x = 142,975.55

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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.