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Finding the Fourth Proportional to 223,724.07, 308,745.41 and 121,750.47

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Solution

The fourth proportional to 223,724.07, 308,745.41 and 121,750.47 is: 168,019.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,724.07 : 308,745.41 = 121,750.47 : x
  2. Step 2: Convert to fraction form
    223,724.07/308,745.41 = 121,750.47/x
  3. Step 3: Cross multiply
    223,724.07x = 308,745.41 × 121,750.47
  4. Step 4: Simplify right side
    223,724.07x = 37,589,898,169.09
  5. Step 5: Solve for x
    x = 37,589,898,169.09/223,724.07
  6. Step 6: Final answer
    x = 168,019.02

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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.