Finding the Fourth Proportional to 216,990.68, 299,450.21 and 125,108.12
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Solution
The fourth proportional to 216,990.68, 299,450.21 and 125,108.12 is: 172,650.97
Step by Step Solution
- Step 1: Write the proportion equation
216,990.68 : 299,450.21 = 125,108.12 : x - Step 2: Convert to fraction form
216,990.68/299,450.21 = 125,108.12/x - Step 3: Cross multiply
216,990.68x = 299,450.21 × 125,108.12 - Step 4: Simplify right side
216,990.68x = 37,463,650,683.91 - Step 5: Solve for x
x = 37,463,650,683.91/216,990.68 - Step 6: Final answer
x = 172,650.97
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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.