Home / 143,137.64-197,523.96-79,471.64

Finding the Fourth Proportional to 143,137.64, 197,523.96 and 79,471.64

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Solution

The fourth proportional to 143,137.64, 197,523.96 and 79,471.64 is: 109,667.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,137.64 : 197,523.96 = 79,471.64 : x
  2. Step 2: Convert to fraction form
    143,137.64/197,523.96 = 79,471.64/x
  3. Step 3: Cross multiply
    143,137.64x = 197,523.96 × 79,471.64
  4. Step 4: Simplify right side
    143,137.64x = 15,697,553,040.49
  5. Step 5: Solve for x
    x = 15,697,553,040.49/143,137.64
  6. Step 6: Final answer
    x = 109,667.54

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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.