Finding the Fourth Proportional to 212,311.53, 292,997.98 and 121,684.98
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Solution
The fourth proportional to 212,311.53, 292,997.98 and 121,684.98 is: 167,929.90
Step by Step Solution
- Step 1: Write the proportion equation
212,311.53 : 292,997.98 = 121,684.98 : x - Step 2: Convert to fraction form
212,311.53/292,997.98 = 121,684.98/x - Step 3: Cross multiply
212,311.53x = 292,997.98 × 121,684.98 - Step 4: Simplify right side
212,311.53x = 35,653,453,336.34 - Step 5: Solve for x
x = 35,653,453,336.34/212,311.53 - Step 6: Final answer
x = 167,929.90
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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.