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Finding the Fourth Proportional to 103,896.36, 143,366.62 and 63,621.54

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Solution

The fourth proportional to 103,896.36, 143,366.62 and 63,621.54 is: 87,791.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,896.36 : 143,366.62 = 63,621.54 : x
  2. Step 2: Convert to fraction form
    103,896.36/143,366.62 = 63,621.54/x
  3. Step 3: Cross multiply
    103,896.36x = 143,366.62 × 63,621.54
  4. Step 4: Simplify right side
    103,896.36x = 9,121,205,148.99
  5. Step 5: Solve for x
    x = 9,121,205,148.99/103,896.36
  6. Step 6: Final answer
    x = 87,791.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.