Finding the Fourth Proportional to 212,340.66, 293,042.21 and 121,711.70
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Solution
The fourth proportional to 212,340.66, 293,042.21 and 121,711.70 is: 167,969.07
Step by Step Solution
- Step 1: Write the proportion equation
212,340.66 : 293,042.21 = 121,711.70 : x - Step 2: Convert to fraction form
212,340.66/293,042.21 = 121,711.70/x - Step 3: Cross multiply
212,340.66x = 293,042.21 × 121,711.70 - Step 4: Simplify right side
212,340.66x = 35,666,663,477.09 - Step 5: Solve for x
x = 35,666,663,477.09/212,340.66 - Step 6: Final answer
x = 167,969.07
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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.