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Finding the Fourth Proportional to 143,969.67, 215,986.10 and 44,137.37

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Solution

The fourth proportional to 143,969.67, 215,986.10 and 44,137.37 is: 66,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,969.67 : 215,986.10 = 44,137.37 : x
  2. Step 2: Convert to fraction form
    143,969.67/215,986.10 = 44,137.37/x
  3. Step 3: Cross multiply
    143,969.67x = 215,986.10 × 44,137.37
  4. Step 4: Simplify right side
    143,969.67x = 9,533,058,729.84
  5. Step 5: Solve for x
    x = 9,533,058,729.84/143,969.67
  6. Step 6: Final answer
    x = 66,215.74

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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.