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Finding the Fourth Proportional to 188,395.39, 259,988.59 and 102,356.07

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Solution

The fourth proportional to 188,395.39, 259,988.59 and 102,356.07 is: 141,252.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,395.39 : 259,988.59 = 102,356.07 : x
  2. Step 2: Convert to fraction form
    188,395.39/259,988.59 = 102,356.07/x
  3. Step 3: Cross multiply
    188,395.39x = 259,988.59 × 102,356.07
  4. Step 4: Simplify right side
    188,395.39x = 26,611,410,905.33
  5. Step 5: Solve for x
    x = 26,611,410,905.33/188,395.39
  6. Step 6: Final answer
    x = 141,252.99

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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.