Finding the Fourth Proportional to 210,611.53, 315,972.69 and 75,689.23
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Solution
The fourth proportional to 210,611.53, 315,972.69 and 75,689.23 is: 113,553.75
Step by Step Solution
- Step 1: Write the proportion equation
210,611.53 : 315,972.69 = 75,689.23 : x - Step 2: Convert to fraction form
210,611.53/315,972.69 = 75,689.23/x - Step 3: Cross multiply
210,611.53x = 315,972.69 × 75,689.23 - Step 4: Simplify right side
210,611.53x = 23,915,729,607.13 - Step 5: Solve for x
x = 23,915,729,607.13/210,611.53 - Step 6: Final answer
x = 113,553.75
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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.