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Finding the Fourth Proportional to 188,689.99, 260,393.88 and 102,650.85

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Solution

The fourth proportional to 188,689.99, 260,393.88 and 102,650.85 is: 141,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,689.99 : 260,393.88 = 102,650.85 : x
  2. Step 2: Convert to fraction form
    188,689.99/260,393.88 = 102,650.85/x
  3. Step 3: Cross multiply
    188,689.99x = 260,393.88 × 102,650.85
  4. Step 4: Simplify right side
    188,689.99x = 26,729,654,093.28
  5. Step 5: Solve for x
    x = 26,729,654,093.28/188,689.99
  6. Step 6: Final answer
    x = 141,659.10

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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.