Home / 199,997.20-299,667.66-121,133.92

Finding the Fourth Proportional to 199,997.20, 299,667.66 and 121,133.92

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Solution

The fourth proportional to 199,997.20, 299,667.66 and 121,133.92 is: 181,502.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,997.20 : 299,667.66 = 121,133.92 : x
  2. Step 2: Convert to fraction form
    199,997.20/299,667.66 = 121,133.92/x
  3. Step 3: Cross multiply
    199,997.20x = 299,667.66 × 121,133.92
  4. Step 4: Simplify right side
    199,997.20x = 36,299,918,353.03
  5. Step 5: Solve for x
    x = 36,299,918,353.03/199,997.20
  6. Step 6: Final answer
    x = 181,502.13

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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.