Finding the Fourth Proportional to 121,755.68, 182,633.58 and 79,671.18
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Solution
The fourth proportional to 121,755.68, 182,633.58 and 79,671.18 is: 119,506.81
Step by Step Solution
- Step 1: Write the proportion equation
121,755.68 : 182,633.58 = 79,671.18 : x - Step 2: Convert to fraction form
121,755.68/182,633.58 = 79,671.18/x - Step 3: Cross multiply
121,755.68x = 182,633.58 × 79,671.18 - Step 4: Simplify right side
121,755.68x = 14,550,632,826.22 - Step 5: Solve for x
x = 14,550,632,826.22/121,755.68 - Step 6: Final answer
x = 119,506.81
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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.