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Finding the Fourth Proportional to 143,771.73, 215,696.42 and 43,929.19

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Solution

The fourth proportional to 143,771.73, 215,696.42 and 43,929.19 is: 65,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,771.73 : 215,696.42 = 43,929.19 : x
  2. Step 2: Convert to fraction form
    143,771.73/215,696.42 = 43,929.19/x
  3. Step 3: Cross multiply
    143,771.73x = 215,696.42 × 43,929.19
  4. Step 4: Simplify right side
    143,771.73x = 9,475,367,718.37
  5. Step 5: Solve for x
    x = 9,475,367,718.37/143,771.73
  6. Step 6: Final answer
    x = 65,905.64

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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.