Finding the Fourth Proportional to 122,921.40, 184,382.10 and 121,171.80
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Solution
The fourth proportional to 122,921.40, 184,382.10 and 121,171.80 is: 181,757.70
Step by Step Solution
- Step 1: Write the proportion equation
122,921.40 : 184,382.10 = 121,171.80 : x - Step 2: Convert to fraction form
122,921.40/184,382.10 = 121,171.80/x - Step 3: Cross multiply
122,921.40x = 184,382.10 × 121,171.80 - Step 4: Simplify right side
122,921.40x = 22,341,910,944.78 - Step 5: Solve for x
x = 22,341,910,944.78/122,921.40 - Step 6: Final answer
x = 181,757.70
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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.