Home / 143,004.24-197,345.31-78,474.56

Finding the Fourth Proportional to 143,004.24, 197,345.31 and 78,474.56

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Solution

The fourth proportional to 143,004.24, 197,345.31 and 78,474.56 is: 108,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,004.24 : 197,345.31 = 78,474.56 : x
  2. Step 2: Convert to fraction form
    143,004.24/197,345.31 = 78,474.56/x
  3. Step 3: Cross multiply
    143,004.24x = 197,345.31 × 78,474.56
  4. Step 4: Simplify right side
    143,004.24x = 15,486,586,753.54
  5. Step 5: Solve for x
    x = 15,486,586,753.54/143,004.24
  6. Step 6: Final answer
    x = 108,294.60

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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.