Finding the Fourth Proportional to 212,768.10, 319,036.95 and 88,121.70
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Solution
The fourth proportional to 212,768.10, 319,036.95 and 88,121.70 is: 132,134.84
Step by Step Solution
- Step 1: Write the proportion equation
212,768.10 : 319,036.95 = 88,121.70 : x - Step 2: Convert to fraction form
212,768.10/319,036.95 = 88,121.70/x - Step 3: Cross multiply
212,768.10x = 319,036.95 × 88,121.70 - Step 4: Simplify right side
212,768.10x = 28,114,078,396.82 - Step 5: Solve for x
x = 28,114,078,396.82/212,768.10 - Step 6: Final answer
x = 132,134.84
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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.