Finding the Fourth Proportional to 106,581.68, 159,623.48 and 84,245.20
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Solution
The fourth proportional to 106,581.68, 159,623.48 and 84,245.20 is: 126,170.95
Step by Step Solution
- Step 1: Write the proportion equation
106,581.68 : 159,623.48 = 84,245.20 : x - Step 2: Convert to fraction form
106,581.68/159,623.48 = 84,245.20/x - Step 3: Cross multiply
106,581.68x = 159,623.48 × 84,245.20 - Step 4: Simplify right side
106,581.68x = 13,447,511,997.30 - Step 5: Solve for x
x = 13,447,511,997.30/106,581.68 - Step 6: Final answer
x = 126,170.95
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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.