Finding the Fourth Proportional to 121,993.48, 168,350.98 and 68,278.49
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Solution
The fourth proportional to 121,993.48, 168,350.98 and 68,278.49 is: 94,224.31
Step by Step Solution
- Step 1: Write the proportion equation
121,993.48 : 168,350.98 = 68,278.49 : x - Step 2: Convert to fraction form
121,993.48/168,350.98 = 68,278.49/x - Step 3: Cross multiply
121,993.48x = 168,350.98 × 68,278.49 - Step 4: Simplify right side
121,993.48x = 11,494,751,590.31 - Step 5: Solve for x
x = 11,494,751,590.31/121,993.48 - Step 6: Final answer
x = 94,224.31
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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.