Finding the Fourth Proportional to 112,940.54, 169,441.79 and 91,828.09
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Solution
The fourth proportional to 112,940.54, 169,441.79 and 91,828.09 is: 137,767.32
Step by Step Solution
- Step 1: Write the proportion equation
112,940.54 : 169,441.79 = 91,828.09 : x - Step 2: Convert to fraction form
112,940.54/169,441.79 = 91,828.09/x - Step 3: Cross multiply
112,940.54x = 169,441.79 × 91,828.09 - Step 4: Simplify right side
112,940.54x = 15,559,515,059.14 - Step 5: Solve for x
x = 15,559,515,059.14/112,940.54 - Step 6: Final answer
x = 137,767.32
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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.