Finding the Fourth Proportional to 214,535.20, 321,678.18 and 81,342.81
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Solution
The fourth proportional to 214,535.20, 321,678.18 and 81,342.81 is: 121,966.95
Step by Step Solution
- Step 1: Write the proportion equation
214,535.20 : 321,678.18 = 81,342.81 : x - Step 2: Convert to fraction form
214,535.20/321,678.18 = 81,342.81/x - Step 3: Cross multiply
214,535.20x = 321,678.18 × 81,342.81 - Step 4: Simplify right side
214,535.20x = 26,166,205,061.78 - Step 5: Solve for x
x = 26,166,205,061.78/214,535.20 - Step 6: Final answer
x = 121,966.95
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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.