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Finding the Fourth Proportional to 188,112.71, 259,598.72 and 103,237.67

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Solution

The fourth proportional to 188,112.71, 259,598.72 and 103,237.67 is: 142,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,112.71 : 259,598.72 = 103,237.67 : x
  2. Step 2: Convert to fraction form
    188,112.71/259,598.72 = 103,237.67/x
  3. Step 3: Cross multiply
    188,112.71x = 259,598.72 × 103,237.67
  4. Step 4: Simplify right side
    188,112.71x = 26,800,366,987.78
  5. Step 5: Solve for x
    x = 26,800,366,987.78/188,112.71
  6. Step 6: Final answer
    x = 142,469.73

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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.