Finding the Fourth Proportional to 139,274.79, 208,832.07 and 74,279.02
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Solution
The fourth proportional to 139,274.79, 208,832.07 and 74,279.02 is: 111,375.80
Step by Step Solution
- Step 1: Write the proportion equation
139,274.79 : 208,832.07 = 74,279.02 : x - Step 2: Convert to fraction form
139,274.79/208,832.07 = 74,279.02/x - Step 3: Cross multiply
139,274.79x = 208,832.07 × 74,279.02 - Step 4: Simplify right side
139,274.79x = 15,511,841,652.20 - Step 5: Solve for x
x = 15,511,841,652.20/139,274.79 - Step 6: Final answer
x = 111,375.80
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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.