Finding the Fourth Proportional to 205,092.18, 282,939.84 and 128,558.97
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Solution
The fourth proportional to 205,092.18, 282,939.84 and 128,558.97 is: 177,356.61
Step by Step Solution
- Step 1: Write the proportion equation
205,092.18 : 282,939.84 = 128,558.97 : x - Step 2: Convert to fraction form
205,092.18/282,939.84 = 128,558.97/x - Step 3: Cross multiply
205,092.18x = 282,939.84 × 128,558.97 - Step 4: Simplify right side
205,092.18x = 36,374,454,402.36 - Step 5: Solve for x
x = 36,374,454,402.36/205,092.18 - Step 6: Final answer
x = 177,356.61
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.