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Finding the Fourth Proportional to 185,255.44, 277,986.12 and 90,486.70

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Solution

The fourth proportional to 185,255.44, 277,986.12 and 90,486.70 is: 135,780.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,255.44 : 277,986.12 = 90,486.70 : x
  2. Step 2: Convert to fraction form
    185,255.44/277,986.12 = 90,486.70/x
  3. Step 3: Cross multiply
    185,255.44x = 277,986.12 × 90,486.70
  4. Step 4: Simplify right side
    185,255.44x = 25,154,046,644.60
  5. Step 5: Solve for x
    x = 25,154,046,644.60/185,255.44
  6. Step 6: Final answer
    x = 135,780.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.