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Finding the Fourth Proportional to 204,967.80, 307,581.30 and 120,727.80

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Solution

The fourth proportional to 204,967.80, 307,581.30 and 120,727.80 is: 181,168.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,967.80 : 307,581.30 = 120,727.80 : x
  2. Step 2: Convert to fraction form
    204,967.80/307,581.30 = 120,727.80/x
  3. Step 3: Cross multiply
    204,967.80x = 307,581.30 × 120,727.80
  4. Step 4: Simplify right side
    204,967.80x = 37,133,613,670.14
  5. Step 5: Solve for x
    x = 37,133,613,670.14/204,967.80
  6. Step 6: Final answer
    x = 181,168.04

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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.