Finding the Fourth Proportional to 121,408.20, 182,112.30 and 91,883.70
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Solution
The fourth proportional to 121,408.20, 182,112.30 and 91,883.70 is: 137,825.55
Step by Step Solution
- Step 1: Write the proportion equation
121,408.20 : 182,112.30 = 91,883.70 : x - Step 2: Convert to fraction form
121,408.20/182,112.30 = 91,883.70/x - Step 3: Cross multiply
121,408.20x = 182,112.30 × 91,883.70 - Step 4: Simplify right side
121,408.20x = 16,733,151,939.51 - Step 5: Solve for x
x = 16,733,151,939.51/121,408.20 - Step 6: Final answer
x = 137,825.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.