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Finding the Fourth Proportional to 143,919.77, 215,879.65 and 38,736

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Solution

The fourth proportional to 143,919.77, 215,879.65 and 38,736 is: 58,104.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,919.77 : 215,879.65 = 38,736 : x
  2. Step 2: Convert to fraction form
    143,919.77/215,879.65 = 38,736/x
  3. Step 3: Cross multiply
    143,919.77x = 215,879.65 × 38,736
  4. Step 4: Simplify right side
    143,919.77x = 8,362,314,025.56
  5. Step 5: Solve for x
    x = 8,362,314,025.56/143,919.77
  6. Step 6: Final answer
    x = 58,104.00

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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.