Finding the Fourth Proportional to 122,961.80, 184,442.70 and 39,855.80
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Solution
The fourth proportional to 122,961.80, 184,442.70 and 39,855.80 is: 59,783.70
Step by Step Solution
- Step 1: Write the proportion equation
122,961.80 : 184,442.70 = 39,855.80 : x - Step 2: Convert to fraction form
122,961.80/184,442.70 = 39,855.80/x - Step 3: Cross multiply
122,961.80x = 184,442.70 × 39,855.80 - Step 4: Simplify right side
122,961.80x = 7,351,111,362.66 - Step 5: Solve for x
x = 7,351,111,362.66/122,961.80 - Step 6: Final answer
x = 59,783.70
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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.