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Finding the Fourth Proportional to 188,906.58, 260,663.40 and 108,337.50

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Solution

The fourth proportional to 188,906.58, 260,663.40 and 108,337.50 is: 149,489.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,906.58 : 260,663.40 = 108,337.50 : x
  2. Step 2: Convert to fraction form
    188,906.58/260,663.40 = 108,337.50/x
  3. Step 3: Cross multiply
    188,906.58x = 260,663.40 × 108,337.50
  4. Step 4: Simplify right side
    188,906.58x = 28,239,621,097.50
  5. Step 5: Solve for x
    x = 28,239,621,097.50/188,906.58
  6. Step 6: Final answer
    x = 149,489.88

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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.