Finding the Fourth Proportional to 128,035.20, 192,052.80 and 44,929.20
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Solution
The fourth proportional to 128,035.20, 192,052.80 and 44,929.20 is: 67,393.80
Step by Step Solution
- Step 1: Write the proportion equation
128,035.20 : 192,052.80 = 44,929.20 : x - Step 2: Convert to fraction form
128,035.20/192,052.80 = 44,929.20/x - Step 3: Cross multiply
128,035.20x = 192,052.80 × 44,929.20 - Step 4: Simplify right side
128,035.20x = 8,628,778,661.76 - Step 5: Solve for x
x = 8,628,778,661.76/128,035.20 - Step 6: Final answer
x = 67,393.80
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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.