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Finding the Fourth Proportional to 143,610.13, 214,815.16 and 100,912.56

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Solution

The fourth proportional to 143,610.13, 214,815.16 and 100,912.56 is: 150,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,610.13 : 214,815.16 = 100,912.56 : x
  2. Step 2: Convert to fraction form
    143,610.13/214,815.16 = 100,912.56/x
  3. Step 3: Cross multiply
    143,610.13x = 214,815.16 × 100,912.56
  4. Step 4: Simplify right side
    143,610.13x = 21,677,547,722.41
  5. Step 5: Solve for x
    x = 21,677,547,722.41/143,610.13
  6. Step 6: Final answer
    x = 150,947.20

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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.