Finding the Fourth Proportional to 115,998.12, 160,074.68 and 68,254.56
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Solution
The fourth proportional to 115,998.12, 160,074.68 and 68,254.56 is: 94,189.69
Step by Step Solution
- Step 1: Write the proportion equation
115,998.12 : 160,074.68 = 68,254.56 : x - Step 2: Convert to fraction form
115,998.12/160,074.68 = 68,254.56/x - Step 3: Cross multiply
115,998.12x = 160,074.68 × 68,254.56 - Step 4: Simplify right side
115,998.12x = 10,925,826,850.54 - Step 5: Solve for x
x = 10,925,826,850.54/115,998.12 - Step 6: Final answer
x = 94,189.69
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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.