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Finding the Fourth Proportional to 192,640, 265,843.20 and 125,572

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Solution

The fourth proportional to 192,640, 265,843.20 and 125,572 is: 173,289.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,640 : 265,843.20 = 125,572 : x
  2. Step 2: Convert to fraction form
    192,640/265,843.20 = 125,572/x
  3. Step 3: Cross multiply
    192,640x = 265,843.20 × 125,572
  4. Step 4: Simplify right side
    192,640x = 33,382,462,310.40
  5. Step 5: Solve for x
    x = 33,382,462,310.40/192,640
  6. Step 6: Final answer
    x = 173,289.36

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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.