Home / 143,433.64-197,933.94-78,902.56

Finding the Fourth Proportional to 143,433.64, 197,933.94 and 78,902.56

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Solution

The fourth proportional to 143,433.64, 197,933.94 and 78,902.56 is: 108,883.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,433.64 : 197,933.94 = 78,902.56 : x
  2. Step 2: Convert to fraction form
    143,433.64/197,933.94 = 78,902.56/x
  3. Step 3: Cross multiply
    143,433.64x = 197,933.94 × 78,902.56
  4. Step 4: Simplify right side
    143,433.64x = 15,617,494,576.89
  5. Step 5: Solve for x
    x = 15,617,494,576.89/143,433.64
  6. Step 6: Final answer
    x = 108,883.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.