Finding the Fourth Proportional to 212,423.39, 293,109.97 and 121,762.67
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Solution
The fourth proportional to 212,423.39, 293,109.97 and 121,762.67 is: 168,012.82
Step by Step Solution
- Step 1: Write the proportion equation
212,423.39 : 293,109.97 = 121,762.67 : x - Step 2: Convert to fraction form
212,423.39/293,109.97 = 121,762.67/x - Step 3: Cross multiply
212,423.39x = 293,109.97 × 121,762.67 - Step 4: Simplify right side
212,423.39x = 35,689,852,550.82 - Step 5: Solve for x
x = 35,689,852,550.82/212,423.39 - Step 6: Final answer
x = 168,012.82
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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.