Finding the Fourth Proportional to 121,908.58, 168,241.28 and 68,197.22
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Solution
The fourth proportional to 121,908.58, 168,241.28 and 68,197.22 is: 94,116.33
Step by Step Solution
- Step 1: Write the proportion equation
121,908.58 : 168,241.28 = 68,197.22 : x - Step 2: Convert to fraction form
121,908.58/168,241.28 = 68,197.22/x - Step 3: Cross multiply
121,908.58x = 168,241.28 × 68,197.22 - Step 4: Simplify right side
121,908.58x = 11,473,587,585.24 - Step 5: Solve for x
x = 11,473,587,585.24/121,908.58 - Step 6: Final answer
x = 94,116.33
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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.