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Finding the Fourth Proportional to 188,260.71, 259,802.97 and 103,385.67

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Solution

The fourth proportional to 188,260.71, 259,802.97 and 103,385.67 is: 142,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,260.71 : 259,802.97 = 103,385.67 : x
  2. Step 2: Convert to fraction form
    188,260.71/259,802.97 = 103,385.67/x
  3. Step 3: Cross multiply
    188,260.71x = 259,802.97 × 103,385.67
  4. Step 4: Simplify right side
    188,260.71x = 26,859,904,121.44
  5. Step 5: Solve for x
    x = 26,859,904,121.44/188,260.71
  6. Step 6: Final answer
    x = 142,673.98

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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.