Finding the Fourth Proportional to 122,396.23, 168,961.59 and 74,668.60
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Solution
The fourth proportional to 122,396.23, 168,961.59 and 74,668.60 is: 103,076.09
Step by Step Solution
- Step 1: Write the proportion equation
122,396.23 : 168,961.59 = 74,668.60 : x - Step 2: Convert to fraction form
122,396.23/168,961.59 = 74,668.60/x - Step 3: Cross multiply
122,396.23x = 168,961.59 × 74,668.60 - Step 4: Simplify right side
122,396.23x = 12,616,125,379.07 - Step 5: Solve for x
x = 12,616,125,379.07/122,396.23 - Step 6: Final answer
x = 103,076.09
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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.