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Finding the Fourth Proportional to 188,388.49, 259,917.48 and 115,715.17

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Solution

The fourth proportional to 188,388.49, 259,917.48 and 115,715.17 is: 159,650.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,388.49 : 259,917.48 = 115,715.17 : x
  2. Step 2: Convert to fraction form
    188,388.49/259,917.48 = 115,715.17/x
  3. Step 3: Cross multiply
    188,388.49x = 259,917.48 × 115,715.17
  4. Step 4: Simplify right side
    188,388.49x = 30,076,395,384.17
  5. Step 5: Solve for x
    x = 30,076,395,384.17/188,388.49
  6. Step 6: Final answer
    x = 159,650.92

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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.