Finding the Fourth Proportional to 144,879.84, 199,932.30 and 81,217.08
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Solution
The fourth proportional to 144,879.84, 199,932.30 and 81,217.08 is: 112,078.52
Step by Step Solution
- Step 1: Write the proportion equation
144,879.84 : 199,932.30 = 81,217.08 : x - Step 2: Convert to fraction form
144,879.84/199,932.30 = 81,217.08/x - Step 3: Cross multiply
144,879.84x = 199,932.30 × 81,217.08 - Step 4: Simplify right side
144,879.84x = 16,237,917,603.68 - Step 5: Solve for x
x = 16,237,917,603.68/144,879.84 - Step 6: Final answer
x = 112,078.52
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1.5x scale
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.