Finding the Fourth Proportional to 122,232.13, 168,690.05 and 71,940.85
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Solution
The fourth proportional to 122,232.13, 168,690.05 and 71,940.85 is: 99,284.09
Step by Step Solution
- Step 1: Write the proportion equation
122,232.13 : 168,690.05 = 71,940.85 : x - Step 2: Convert to fraction form
122,232.13/168,690.05 = 71,940.85/x - Step 3: Cross multiply
122,232.13x = 168,690.05 × 71,940.85 - Step 4: Simplify right side
122,232.13x = 12,135,705,583.54 - Step 5: Solve for x
x = 12,135,705,583.54/122,232.13 - Step 6: Final answer
x = 99,284.09
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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.