Finding the Fourth Proportional to 128,390.19, 192,480.95 and 53,566.08
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Solution
The fourth proportional to 128,390.19, 192,480.95 and 53,566.08 is: 80,305.60
Step by Step Solution
- Step 1: Write the proportion equation
128,390.19 : 192,480.95 = 53,566.08 : x - Step 2: Convert to fraction form
128,390.19/192,480.95 = 53,566.08/x - Step 3: Cross multiply
128,390.19x = 192,480.95 × 53,566.08 - Step 4: Simplify right side
128,390.19x = 10,310,450,625.71 - Step 5: Solve for x
x = 10,310,450,625.71/128,390.19 - Step 6: Final answer
x = 80,305.60
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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.