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Finding the Fourth Proportional to 188,169.75, 259,674.39 and 103,292.28

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Solution

The fourth proportional to 188,169.75, 259,674.39 and 103,292.28 is: 142,543.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,169.75 : 259,674.39 = 103,292.28 : x
  2. Step 2: Convert to fraction form
    188,169.75/259,674.39 = 103,292.28/x
  3. Step 3: Cross multiply
    188,169.75x = 259,674.39 × 103,292.28
  4. Step 4: Simplify right side
    188,169.75x = 26,822,359,800.71
  5. Step 5: Solve for x
    x = 26,822,359,800.71/188,169.75
  6. Step 6: Final answer
    x = 142,543.42

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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.