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Finding the Fourth Proportional to 143,480.63, 214,925.62 and 84,173.29

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Solution

The fourth proportional to 143,480.63, 214,925.62 and 84,173.29 is: 126,086.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,480.63 : 214,925.62 = 84,173.29 : x
  2. Step 2: Convert to fraction form
    143,480.63/214,925.62 = 84,173.29/x
  3. Step 3: Cross multiply
    143,480.63x = 214,925.62 × 84,173.29
  4. Step 4: Simplify right side
    143,480.63x = 18,090,996,540.69
  5. Step 5: Solve for x
    x = 18,090,996,540.69/143,480.63
  6. Step 6: Final answer
    x = 126,086.68

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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.