Finding the Fourth Proportional to 128,936.98, 192,523.06 and 115,523.38
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Solution
The fourth proportional to 128,936.98, 192,523.06 and 115,523.38 is: 172,494.46
Step by Step Solution
- Step 1: Write the proportion equation
128,936.98 : 192,523.06 = 115,523.38 : x - Step 2: Convert to fraction form
128,936.98/192,523.06 = 115,523.38/x - Step 3: Cross multiply
128,936.98x = 192,523.06 × 115,523.38 - Step 4: Simplify right side
128,936.98x = 22,240,914,619.14 - Step 5: Solve for x
x = 22,240,914,619.14/128,936.98 - Step 6: Final answer
x = 172,494.46
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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.