Finding the Fourth Proportional to 212,220.87, 292,906.41 and 121,637.56
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Solution
The fourth proportional to 212,220.87, 292,906.41 and 121,637.56 is: 167,883.68
Step by Step Solution
- Step 1: Write the proportion equation
212,220.87 : 292,906.41 = 121,637.56 : x - Step 2: Convert to fraction form
212,220.87/292,906.41 = 121,637.56/x - Step 3: Cross multiply
212,220.87x = 292,906.41 × 121,637.56 - Step 4: Simplify right side
212,220.87x = 35,628,421,020.76 - Step 5: Solve for x
x = 35,628,421,020.76/212,220.87 - Step 6: Final answer
x = 167,883.68
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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.