Finding the Fourth Proportional to 189,249.21, 261,155.11 and 108,619.98
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Solution
The fourth proportional to 189,249.21, 261,155.11 and 108,619.98 is: 149,890.52
Step by Step Solution
- Step 1: Write the proportion equation
189,249.21 : 261,155.11 = 108,619.98 : x - Step 2: Convert to fraction form
189,249.21/261,155.11 = 108,619.98/x - Step 3: Cross multiply
189,249.21x = 261,155.11 × 108,619.98 - Step 4: Simplify right side
189,249.21x = 28,366,662,825.10 - Step 5: Solve for x
x = 28,366,662,825.10/189,249.21 - Step 6: Final answer
x = 149,890.52
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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.