Home / 143,433.78-197,935.77-79,770.21

Finding the Fourth Proportional to 143,433.78, 197,935.77 and 79,770.21

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Solution

The fourth proportional to 143,433.78, 197,935.77 and 79,770.21 is: 110,081.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,433.78 : 197,935.77 = 79,770.21 : x
  2. Step 2: Convert to fraction form
    143,433.78/197,935.77 = 79,770.21/x
  3. Step 3: Cross multiply
    143,433.78x = 197,935.77 × 79,770.21
  4. Step 4: Simplify right side
    143,433.78x = 15,789,377,939.41
  5. Step 5: Solve for x
    x = 15,789,377,939.41/143,433.78
  6. Step 6: Final answer
    x = 110,081.31

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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.