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Finding the Fourth Proportional to 143,481.63, 214,927.12 and 84,174.29

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Solution

The fourth proportional to 143,481.63, 214,927.12 and 84,174.29 is: 126,088.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,481.63 : 214,927.12 = 84,174.29 : x
  2. Step 2: Convert to fraction form
    143,481.63/214,927.12 = 84,174.29/x
  3. Step 3: Cross multiply
    143,481.63x = 214,927.12 × 84,174.29
  4. Step 4: Simplify right side
    143,481.63x = 18,091,337,727.74
  5. Step 5: Solve for x
    x = 18,091,337,727.74/143,481.63
  6. Step 6: Final answer
    x = 126,088.18

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1.5x scale

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.