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Finding the Fourth Proportional to 185,274.44, 255,678.53 and 100,391.50

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Solution

The fourth proportional to 185,274.44, 255,678.53 and 100,391.50 is: 138,540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,274.44 : 255,678.53 = 100,391.50 : x
  2. Step 2: Convert to fraction form
    185,274.44/255,678.53 = 100,391.50/x
  3. Step 3: Cross multiply
    185,274.44x = 255,678.53 × 100,391.50
  4. Step 4: Simplify right side
    185,274.44x = 25,667,950,962.14
  5. Step 5: Solve for x
    x = 25,667,950,962.14/185,274.44
  6. Step 6: Final answer
    x = 138,540.16

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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.