Finding the Fourth Proportional to 151,842.57, 209,537.09 and 83,858.09
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Solution
The fourth proportional to 151,842.57, 209,537.09 and 83,858.09 is: 115,721.03
Step by Step Solution
- Step 1: Write the proportion equation
151,842.57 : 209,537.09 = 83,858.09 : x - Step 2: Convert to fraction form
151,842.57/209,537.09 = 83,858.09/x - Step 3: Cross multiply
151,842.57x = 209,537.09 × 83,858.09 - Step 4: Simplify right side
151,842.57x = 17,571,379,398.83 - Step 5: Solve for x
x = 17,571,379,398.83/151,842.57 - Step 6: Final answer
x = 115,721.03
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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.