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Finding the Fourth Proportional to 143,824.41, 215,745.12 and 43,991.51

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Solution

The fourth proportional to 143,824.41, 215,745.12 and 43,991.51 is: 65,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,824.41 : 215,745.12 = 43,991.51 : x
  2. Step 2: Convert to fraction form
    143,824.41/215,745.12 = 43,991.51/x
  3. Step 3: Cross multiply
    143,824.41x = 215,745.12 × 43,991.51
  4. Step 4: Simplify right side
    143,824.41x = 9,490,952,525.21
  5. Step 5: Solve for x
    x = 9,490,952,525.21/143,824.41
  6. Step 6: Final answer
    x = 65,989.86

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1.5x scale

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.