Finding the Fourth Proportional to 121,879.80, 168,197.76 and 68,167.08
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Solution
The fourth proportional to 121,879.80, 168,197.76 and 68,167.08 is: 94,072.60
Step by Step Solution
- Step 1: Write the proportion equation
121,879.80 : 168,197.76 = 68,167.08 : x - Step 2: Convert to fraction form
121,879.80/168,197.76 = 68,167.08/x - Step 3: Cross multiply
121,879.80x = 168,197.76 × 68,167.08 - Step 4: Simplify right side
121,879.80x = 11,465,550,161.74 - Step 5: Solve for x
x = 11,465,550,161.74/121,879.80 - Step 6: Final answer
x = 94,072.60
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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.