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Finding the Fourth Proportional to 248,156.70, 372,235.05 and 81,923.10

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Solution

The fourth proportional to 248,156.70, 372,235.05 and 81,923.10 is: 122,884.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,156.70 : 372,235.05 = 81,923.10 : x
  2. Step 2: Convert to fraction form
    248,156.70/372,235.05 = 81,923.10/x
  3. Step 3: Cross multiply
    248,156.70x = 372,235.05 × 81,923.10
  4. Step 4: Simplify right side
    248,156.70x = 30,494,649,224.66
  5. Step 5: Solve for x
    x = 30,494,649,224.66/248,156.70
  6. Step 6: Final answer
    x = 122,884.65

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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.