Finding the Fourth Proportional to 143,982.09, 198,693.95 and 79,451.96
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Solution
The fourth proportional to 143,982.09, 198,693.95 and 79,451.96 is: 109,642.96
Step by Step Solution
- Step 1: Write the proportion equation
143,982.09 : 198,693.95 = 79,451.96 : x - Step 2: Convert to fraction form
143,982.09/198,693.95 = 79,451.96/x - Step 3: Cross multiply
143,982.09x = 198,693.95 × 79,451.96 - Step 4: Simplify right side
143,982.09x = 15,786,622,376.91 - Step 5: Solve for x
x = 15,786,622,376.91/143,982.09 - Step 6: Final answer
x = 109,642.96
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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.