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Finding the Fourth Proportional to 188,687.30, 260,393.21 and 102,651.12

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Solution

The fourth proportional to 188,687.30, 260,393.21 and 102,651.12 is: 141,661.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,687.30 : 260,393.21 = 102,651.12 : x
  2. Step 2: Convert to fraction form
    188,687.30/260,393.21 = 102,651.12/x
  3. Step 3: Cross multiply
    188,687.30x = 260,393.21 × 102,651.12
  4. Step 4: Simplify right side
    188,687.30x = 26,729,654,133.64
  5. Step 5: Solve for x
    x = 26,729,654,133.64/188,687.30
  6. Step 6: Final answer
    x = 141,661.12

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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.