Finding the Fourth Proportional to 131,678.21, 181,714.64 and 71,247.53
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Solution
The fourth proportional to 131,678.21, 181,714.64 and 71,247.53 is: 98,320.90
Step by Step Solution
- Step 1: Write the proportion equation
131,678.21 : 181,714.64 = 71,247.53 : x - Step 2: Convert to fraction form
131,678.21/181,714.64 = 71,247.53/x - Step 3: Cross multiply
131,678.21x = 181,714.64 × 71,247.53 - Step 4: Simplify right side
131,678.21x = 12,946,719,897.24 - Step 5: Solve for x
x = 12,946,719,897.24/131,678.21 - Step 6: Final answer
x = 98,320.90
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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.