Finding the Fourth Proportional to 122,961.40, 184,442.10 and 121,211.80
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Solution
The fourth proportional to 122,961.40, 184,442.10 and 121,211.80 is: 181,817.70
Step by Step Solution
- Step 1: Write the proportion equation
122,961.40 : 184,442.10 = 121,211.80 : x - Step 2: Convert to fraction form
122,961.40/184,442.10 = 121,211.80/x - Step 3: Cross multiply
122,961.40x = 184,442.10 × 121,211.80 - Step 4: Simplify right side
122,961.40x = 22,356,558,936.78 - Step 5: Solve for x
x = 22,356,558,936.78/122,961.40 - Step 6: Final answer
x = 181,817.70
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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.