Finding the Fourth Proportional to 143,759.51, 198,389.50 and 79,231.08
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Solution
The fourth proportional to 143,759.51, 198,389.50 and 79,231.08 is: 109,339.65
Step by Step Solution
- Step 1: Write the proportion equation
143,759.51 : 198,389.50 = 79,231.08 : x - Step 2: Convert to fraction form
143,759.51/198,389.50 = 79,231.08/x - Step 3: Cross multiply
143,759.51x = 198,389.50 × 79,231.08 - Step 4: Simplify right side
143,759.51x = 15,718,614,445.48 - Step 5: Solve for x
x = 15,718,614,445.48/143,759.51 - Step 6: Final answer
x = 109,339.65
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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.