Finding the Fourth Proportional to 121,355.08, 167,391.84 and 80,518.32
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Solution
The fourth proportional to 121,355.08, 167,391.84 and 80,518.32 is: 111,063.42
Step by Step Solution
- Step 1: Write the proportion equation
121,355.08 : 167,391.84 = 80,518.32 : x - Step 2: Convert to fraction form
121,355.08/167,391.84 = 80,518.32/x - Step 3: Cross multiply
121,355.08x = 167,391.84 × 80,518.32 - Step 4: Simplify right side
121,355.08x = 13,478,109,738.51 - Step 5: Solve for x
x = 13,478,109,738.51/121,355.08 - Step 6: Final answer
x = 111,063.42
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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.