Finding the Fourth Proportional to 210,125.87, 289,891.14 and 129,413.31
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Solution
The fourth proportional to 210,125.87, 289,891.14 and 129,413.31 is: 178,539.52
Step by Step Solution
- Step 1: Write the proportion equation
210,125.87 : 289,891.14 = 129,413.31 : x - Step 2: Convert to fraction form
210,125.87/289,891.14 = 129,413.31/x - Step 3: Cross multiply
210,125.87x = 289,891.14 × 129,413.31 - Step 4: Simplify right side
210,125.87x = 37,515,771,967.07 - Step 5: Solve for x
x = 37,515,771,967.07/210,125.87 - Step 6: Final answer
x = 178,539.52
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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.