Finding the Fourth Proportional to 128,472.84, 192,661.38 and 44,209.44
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Solution
The fourth proportional to 128,472.84, 192,661.38 and 44,209.44 is: 66,297.68
Step by Step Solution
- Step 1: Write the proportion equation
128,472.84 : 192,661.38 = 44,209.44 : x - Step 2: Convert to fraction form
128,472.84/192,661.38 = 44,209.44/x - Step 3: Cross multiply
128,472.84x = 192,661.38 × 44,209.44 - Step 4: Simplify right side
128,472.84x = 8,517,451,719.43 - Step 5: Solve for x
x = 8,517,451,719.43/128,472.84 - Step 6: Final answer
x = 66,297.68
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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.