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Finding the Fourth Proportional to 188,734.56, 260,448.90 and 102,689.88

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Solution

The fourth proportional to 188,734.56, 260,448.90 and 102,689.88 is: 141,709.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,734.56 : 260,448.90 = 102,689.88 : x
  2. Step 2: Convert to fraction form
    188,734.56/260,448.90 = 102,689.88/x
  3. Step 3: Cross multiply
    188,734.56x = 260,448.90 × 102,689.88
  4. Step 4: Simplify right side
    188,734.56x = 26,745,466,287.13
  5. Step 5: Solve for x
    x = 26,745,466,287.13/188,734.56
  6. Step 6: Final answer
    x = 141,709.43

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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.