Finding the Fourth Proportional to 129,863.40, 194,795.10 and 74,413.80
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Solution
The fourth proportional to 129,863.40, 194,795.10 and 74,413.80 is: 111,620.70
Step by Step Solution
- Step 1: Write the proportion equation
129,863.40 : 194,795.10 = 74,413.80 : x - Step 2: Convert to fraction form
129,863.40/194,795.10 = 74,413.80/x - Step 3: Cross multiply
129,863.40x = 194,795.10 × 74,413.80 - Step 4: Simplify right side
129,863.40x = 14,495,443,612.38 - Step 5: Solve for x
x = 14,495,443,612.38/129,863.40 - Step 6: Final answer
x = 111,620.70
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1.5x scale
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.