Home / 223,128.62-307,921.03-121,154.03

Finding the Fourth Proportional to 223,128.62, 307,921.03 and 121,154.03

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Solution

The fourth proportional to 223,128.62, 307,921.03 and 121,154.03 is: 167,194.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,128.62 : 307,921.03 = 121,154.03 : x
  2. Step 2: Convert to fraction form
    223,128.62/307,921.03 = 121,154.03/x
  3. Step 3: Cross multiply
    223,128.62x = 307,921.03 × 121,154.03
  4. Step 4: Simplify right side
    223,128.62x = 37,305,871,560.88
  5. Step 5: Solve for x
    x = 37,305,871,560.88/223,128.62
  6. Step 6: Final answer
    x = 167,194.47

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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.