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Finding the Fourth Proportional to 143,339.76, 197,800.38 and 79,675.38

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Solution

The fourth proportional to 143,339.76, 197,800.38 and 79,675.38 is: 109,947.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,339.76 : 197,800.38 = 79,675.38 : x
  2. Step 2: Convert to fraction form
    143,339.76/197,800.38 = 79,675.38/x
  3. Step 3: Cross multiply
    143,339.76x = 197,800.38 × 79,675.38
  4. Step 4: Simplify right side
    143,339.76x = 15,759,820,440.64
  5. Step 5: Solve for x
    x = 15,759,820,440.64/143,339.76
  6. Step 6: Final answer
    x = 109,947.31

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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.