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Finding the Fourth Proportional to 185,418.86, 255,783.84 and 117,321.08

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Solution

The fourth proportional to 185,418.86, 255,783.84 and 117,321.08 is: 161,843.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,418.86 : 255,783.84 = 117,321.08 : x
  2. Step 2: Convert to fraction form
    185,418.86/255,783.84 = 117,321.08/x
  3. Step 3: Cross multiply
    185,418.86x = 255,783.84 × 117,321.08
  4. Step 4: Simplify right side
    185,418.86x = 30,008,836,355.35
  5. Step 5: Solve for x
    x = 30,008,836,355.35/185,418.86
  6. Step 6: Final answer
    x = 161,843.50

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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.