Finding the Fourth Proportional to 198,959.80, 274,483.20 and 122,455.80
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Solution
The fourth proportional to 198,959.80, 274,483.20 and 122,455.80 is: 168,938.95
Step by Step Solution
- Step 1: Write the proportion equation
198,959.80 : 274,483.20 = 122,455.80 : x - Step 2: Convert to fraction form
198,959.80/274,483.20 = 122,455.80/x - Step 3: Cross multiply
198,959.80x = 274,483.20 × 122,455.80 - Step 4: Simplify right side
198,959.80x = 33,612,059,842.56 - Step 5: Solve for x
x = 33,612,059,842.56/198,959.80 - Step 6: Final answer
x = 168,938.95
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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.