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Finding the Fourth Proportional to 143,266.32, 197,713.71 and 79,603.97

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Solution

The fourth proportional to 143,266.32, 197,713.71 and 79,603.97 is: 109,856.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,266.32 : 197,713.71 = 79,603.97 : x
  2. Step 2: Convert to fraction form
    143,266.32/197,713.71 = 79,603.97/x
  3. Step 3: Cross multiply
    143,266.32x = 197,713.71 × 79,603.97
  4. Step 4: Simplify right side
    143,266.32x = 15,738,795,250.86
  5. Step 5: Solve for x
    x = 15,738,795,250.86/143,266.32
  6. Step 6: Final answer
    x = 109,856.91

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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.