Finding the Fourth Proportional to 128,890.40, 193,338.84 and 35,395.88
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Solution
The fourth proportional to 128,890.40, 193,338.84 and 35,395.88 is: 53,094.70
Step by Step Solution
- Step 1: Write the proportion equation
128,890.40 : 193,338.84 = 35,395.88 : x - Step 2: Convert to fraction form
128,890.40/193,338.84 = 35,395.88/x - Step 3: Cross multiply
128,890.40x = 193,338.84 × 35,395.88 - Step 4: Simplify right side
128,890.40x = 6,843,397,413.29 - Step 5: Solve for x
x = 6,843,397,413.29/128,890.40 - Step 6: Final answer
x = 53,094.70
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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.