Finding the Fourth Proportional to 129,571.06, 178,746.94 and 75,822.80
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Solution
The fourth proportional to 129,571.06, 178,746.94 and 75,822.80 is: 104,599.70
Step by Step Solution
- Step 1: Write the proportion equation
129,571.06 : 178,746.94 = 75,822.80 : x - Step 2: Convert to fraction form
129,571.06/178,746.94 = 75,822.80/x - Step 3: Cross multiply
129,571.06x = 178,746.94 × 75,822.80 - Step 4: Simplify right side
129,571.06x = 13,553,093,482.23 - Step 5: Solve for x
x = 13,553,093,482.23/129,571.06 - Step 6: Final answer
x = 104,599.70
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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.