Finding the Fourth Proportional to 212,093.76, 292,695.76 and 121,478.96
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Solution
The fourth proportional to 212,093.76, 292,695.76 and 121,478.96 is: 167,644.61
Step by Step Solution
- Step 1: Write the proportion equation
212,093.76 : 292,695.76 = 121,478.96 : x - Step 2: Convert to fraction form
212,093.76/292,695.76 = 121,478.96/x - Step 3: Cross multiply
212,093.76x = 292,695.76 × 121,478.96 - Step 4: Simplify right side
212,093.76x = 35,556,376,521.21 - Step 5: Solve for x
x = 35,556,376,521.21/212,093.76 - Step 6: Final answer
x = 167,644.61
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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.