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Finding the Fourth Proportional to 192,990.32, 266,346.28 and 111,321.68

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Solution

The fourth proportional to 192,990.32, 266,346.28 and 111,321.68 is: 153,635.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,990.32 : 266,346.28 = 111,321.68 : x
  2. Step 2: Convert to fraction form
    192,990.32/266,346.28 = 111,321.68/x
  3. Step 3: Cross multiply
    192,990.32x = 266,346.28 × 111,321.68
  4. Step 4: Simplify right side
    192,990.32x = 29,650,115,351.35
  5. Step 5: Solve for x
    x = 29,650,115,351.35/192,990.32
  6. Step 6: Final answer
    x = 153,635.25

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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.