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Finding the Fourth Proportional to 143,336.80, 214,709.55 and 83,992.60

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Solution

The fourth proportional to 143,336.80, 214,709.55 and 83,992.60 is: 125,815.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,336.80 : 214,709.55 = 83,992.60 : x
  2. Step 2: Convert to fraction form
    143,336.80/214,709.55 = 83,992.60/x
  3. Step 3: Cross multiply
    143,336.80x = 214,709.55 × 83,992.60
  4. Step 4: Simplify right side
    143,336.80x = 18,034,013,349.33
  5. Step 5: Solve for x
    x = 18,034,013,349.33/143,336.80
  6. Step 6: Final answer
    x = 125,815.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.