Home / 143,212.52-197,611.31-82,771.47

Finding the Fourth Proportional to 143,212.52, 197,611.31 and 82,771.47

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Solution

The fourth proportional to 143,212.52, 197,611.31 and 82,771.47 is: 114,211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,212.52 : 197,611.31 = 82,771.47 : x
  2. Step 2: Convert to fraction form
    143,212.52/197,611.31 = 82,771.47/x
  3. Step 3: Cross multiply
    143,212.52x = 197,611.31 × 82,771.47
  4. Step 4: Simplify right side
    143,212.52x = 16,356,578,824.25
  5. Step 5: Solve for x
    x = 16,356,578,824.25/143,212.52
  6. Step 6: Final answer
    x = 114,211.93

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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.