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Finding the Fourth Proportional to 223,727.90, 308,745.81 and 121,754.16

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Solution

The fourth proportional to 223,727.90, 308,745.81 and 121,754.16 is: 168,021.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,727.90 : 308,745.81 = 121,754.16 : x
  2. Step 2: Convert to fraction form
    223,727.90/308,745.81 = 121,754.16/x
  3. Step 3: Cross multiply
    223,727.90x = 308,745.81 × 121,754.16
  4. Step 4: Simplify right side
    223,727.90x = 37,591,086,750.07
  5. Step 5: Solve for x
    x = 37,591,086,750.07/223,727.90
  6. Step 6: Final answer
    x = 168,021.46

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1.5x scale

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.