Finding the Fourth Proportional to 129,310,275.45, 193,965,413.18 and 115,280,233.05
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Solution
The fourth proportional to 129,310,275.45, 193,965,413.18 and 115,280,233.05 is: 172,920,349.58
Step by Step Solution
- Step 1: Write the proportion equation
129,310,275.45 : 193,965,413.18 = 115,280,233.05 : x - Step 2: Convert to fraction form
129,310,275.45/193,965,413.18 = 115,280,233.05/x - Step 3: Cross multiply
129,310,275.45x = 193,965,413.18 × 115,280,233.05 - Step 4: Simplify right side
129,310,275.45x = 22,360,378,035,029,940 - Step 5: Solve for x
x = 22,360,378,035,029,940/129,310,275.45 - Step 6: Final answer
x = 172,920,349.58
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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.