Finding the Fourth Proportional to 121,161.70, 167,218.86 and 69,498.99
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Solution
The fourth proportional to 121,161.70, 167,218.86 and 69,498.99 is: 95,917.61
Step by Step Solution
- Step 1: Write the proportion equation
121,161.70 : 167,218.86 = 69,498.99 : x - Step 2: Convert to fraction form
121,161.70/167,218.86 = 69,498.99/x - Step 3: Cross multiply
121,161.70x = 167,218.86 × 69,498.99 - Step 4: Simplify right side
121,161.70x = 11,621,541,082.87 - Step 5: Solve for x
x = 11,621,541,082.87/121,161.70 - Step 6: Final answer
x = 95,917.61
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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.