Finding the Fourth Proportional to 128,450.41, 192,711.15 and 53,605.80
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Solution
The fourth proportional to 128,450.41, 192,711.15 and 53,605.80 is: 80,423.53
Step by Step Solution
- Step 1: Write the proportion equation
128,450.41 : 192,711.15 = 53,605.80 : x - Step 2: Convert to fraction form
128,450.41/192,711.15 = 53,605.80/x - Step 3: Cross multiply
128,450.41x = 192,711.15 × 53,605.80 - Step 4: Simplify right side
128,450.41x = 10,330,435,364.67 - Step 5: Solve for x
x = 10,330,435,364.67/128,450.41 - Step 6: Final answer
x = 80,423.53
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1.5x scale
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.