Finding the Fourth Proportional to 128,936.23, 192,521.94 and 115,522.63
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Solution
The fourth proportional to 128,936.23, 192,521.94 and 115,522.63 is: 172,493.34
Step by Step Solution
- Step 1: Write the proportion equation
128,936.23 : 192,521.94 = 115,522.63 : x - Step 2: Convert to fraction form
128,936.23/192,521.94 = 115,522.63/x - Step 3: Cross multiply
128,936.23x = 192,521.94 × 115,522.63 - Step 4: Simplify right side
128,936.23x = 22,240,640,552.70 - Step 5: Solve for x
x = 22,240,640,552.70/128,936.23 - Step 6: Final answer
x = 172,493.34
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.