Finding the Fourth Proportional to 143,963.26, 198,667.98 and 79,433.08
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Solution
The fourth proportional to 143,963.26, 198,667.98 and 79,433.08 is: 109,616.92
Step by Step Solution
- Step 1: Write the proportion equation
143,963.26 : 198,667.98 = 79,433.08 : x - Step 2: Convert to fraction form
143,963.26/198,667.98 = 79,433.08/x - Step 3: Cross multiply
143,963.26x = 198,667.98 × 79,433.08 - Step 4: Simplify right side
143,963.26x = 15,780,809,548.78 - Step 5: Solve for x
x = 15,780,809,548.78/143,963.26 - Step 6: Final answer
x = 109,616.92
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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.