Finding the Fourth Proportional to 131,423.10, 197,316.90 and 84,329.70
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Solution
The fourth proportional to 131,423.10, 197,316.90 and 84,329.70 is: 126,611.49
Step by Step Solution
- Step 1: Write the proportion equation
131,423.10 : 197,316.90 = 84,329.70 : x - Step 2: Convert to fraction form
131,423.10/197,316.90 = 84,329.70/x - Step 3: Cross multiply
131,423.10x = 197,316.90 × 84,329.70 - Step 4: Simplify right side
131,423.10x = 16,639,674,981.93 - Step 5: Solve for x
x = 16,639,674,981.93/131,423.10 - Step 6: Final answer
x = 126,611.49
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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.