Home / 143,082.96-197,450.36-78,552.08

Finding the Fourth Proportional to 143,082.96, 197,450.36 and 78,552.08

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Solution

The fourth proportional to 143,082.96, 197,450.36 and 78,552.08 is: 108,399.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,082.96 : 197,450.36 = 78,552.08 : x
  2. Step 2: Convert to fraction form
    143,082.96/197,450.36 = 78,552.08/x
  3. Step 3: Cross multiply
    143,082.96x = 197,450.36 × 78,552.08
  4. Step 4: Simplify right side
    143,082.96x = 15,510,136,474.75
  5. Step 5: Solve for x
    x = 15,510,136,474.75/143,082.96
  6. Step 6: Final answer
    x = 108,399.61

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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.