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Finding the Fourth Proportional to 188,066.75, 259,527.42 and 105,279.57

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Solution

The fourth proportional to 188,066.75, 259,527.42 and 105,279.57 is: 145,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,066.75 : 259,527.42 = 105,279.57 : x
  2. Step 2: Convert to fraction form
    188,066.75/259,527.42 = 105,279.57/x
  3. Step 3: Cross multiply
    188,066.75x = 259,527.42 × 105,279.57
  4. Step 4: Simplify right side
    188,066.75x = 27,322,935,180.81
  5. Step 5: Solve for x
    x = 27,322,935,180.81/188,066.75
  6. Step 6: Final answer
    x = 145,283.18

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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.