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Finding the Fourth Proportional to 188,349.31, 259,990.28 and 124,707.61

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Solution

The fourth proportional to 188,349.31, 259,990.28 and 124,707.61 is: 172,141.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,349.31 : 259,990.28 = 124,707.61 : x
  2. Step 2: Convert to fraction form
    188,349.31/259,990.28 = 124,707.61/x
  3. Step 3: Cross multiply
    188,349.31x = 259,990.28 × 124,707.61
  4. Step 4: Simplify right side
    188,349.31x = 32,422,765,636.17
  5. Step 5: Solve for x
    x = 32,422,765,636.17/188,349.31
  6. Step 6: Final answer
    x = 172,141.68

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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.