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Finding the Fourth Proportional to 163,436.54, 225,021.04 and 139,467.02

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Solution

The fourth proportional to 163,436.54, 225,021.04 and 139,467.02 is: 192,019.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,436.54 : 225,021.04 = 139,467.02 : x
  2. Step 2: Convert to fraction form
    163,436.54/225,021.04 = 139,467.02/x
  3. Step 3: Cross multiply
    163,436.54x = 225,021.04 × 139,467.02
  4. Step 4: Simplify right side
    163,436.54x = 31,383,012,412.33
  5. Step 5: Solve for x
    x = 31,383,012,412.33/163,436.54
  6. Step 6: Final answer
    x = 192,019.57

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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.