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Finding the Fourth Proportional to 188,119.62, 259,612.59 and 103,239.72

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Solution

The fourth proportional to 188,119.62, 259,612.59 and 103,239.72 is: 142,474.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,119.62 : 259,612.59 = 103,239.72 : x
  2. Step 2: Convert to fraction form
    188,119.62/259,612.59 = 103,239.72/x
  3. Step 3: Cross multiply
    188,119.62x = 259,612.59 × 103,239.72
  4. Step 4: Simplify right side
    188,119.62x = 26,802,331,100.07
  5. Step 5: Solve for x
    x = 26,802,331,100.07/188,119.62
  6. Step 6: Final answer
    x = 142,474.94

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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.