Home / 143,310.87-197,767.56-79,647.39

Finding the Fourth Proportional to 143,310.87, 197,767.56 and 79,647.39

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Solution

The fourth proportional to 143,310.87, 197,767.56 and 79,647.39 is: 109,912.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,310.87 : 197,767.56 = 79,647.39 : x
  2. Step 2: Convert to fraction form
    143,310.87/197,767.56 = 79,647.39/x
  3. Step 3: Cross multiply
    143,310.87x = 197,767.56 × 79,647.39
  4. Step 4: Simplify right side
    143,310.87x = 15,751,669,980.67
  5. Step 5: Solve for x
    x = 15,751,669,980.67/143,310.87
  6. Step 6: Final answer
    x = 109,912.60

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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.