Finding the Fourth Proportional to 213,130.19, 319,702.14 and 111,902.60
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Solution
The fourth proportional to 213,130.19, 319,702.14 and 111,902.60 is: 167,857.50
Step by Step Solution
- Step 1: Write the proportion equation
213,130.19 : 319,702.14 = 111,902.60 : x - Step 2: Convert to fraction form
213,130.19/319,702.14 = 111,902.60/x - Step 3: Cross multiply
213,130.19x = 319,702.14 × 111,902.60 - Step 4: Simplify right side
213,130.19x = 35,775,499,093.05 - Step 5: Solve for x
x = 35,775,499,093.05/213,130.19 - Step 6: Final answer
x = 167,857.50
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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.