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Finding the Fourth Proportional to 149,007.44, 205,629.18 and 81,024.46

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Solution

The fourth proportional to 149,007.44, 205,629.18 and 81,024.46 is: 111,813.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,007.44 : 205,629.18 = 81,024.46 : x
  2. Step 2: Convert to fraction form
    149,007.44/205,629.18 = 81,024.46/x
  3. Step 3: Cross multiply
    149,007.44x = 205,629.18 × 81,024.46
  4. Step 4: Simplify right side
    149,007.44x = 16,660,993,269.74
  5. Step 5: Solve for x
    x = 16,660,993,269.74/149,007.44
  6. Step 6: Final answer
    x = 111,813.16

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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.