Finding the Fourth Proportional to 136,348.81, 188,169.11 and 81,917.63
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Solution
The fourth proportional to 136,348.81, 188,169.11 and 81,917.63 is: 113,050.99
Step by Step Solution
- Step 1: Write the proportion equation
136,348.81 : 188,169.11 = 81,917.63 : x - Step 2: Convert to fraction form
136,348.81/188,169.11 = 81,917.63/x - Step 3: Cross multiply
136,348.81x = 188,169.11 × 81,917.63 - Step 4: Simplify right side
136,348.81x = 15,414,367,530.41 - Step 5: Solve for x
x = 15,414,367,530.41/136,348.81 - Step 6: Final answer
x = 113,050.99
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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.