Finding the Fourth Proportional to 99,162.92, 136,729.20 and 73,968.68
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Solution
The fourth proportional to 99,162.92, 136,729.20 and 73,968.68 is: 101,990.53
Step by Step Solution
- Step 1: Write the proportion equation
99,162.92 : 136,729.20 = 73,968.68 : x - Step 2: Convert to fraction form
99,162.92/136,729.20 = 73,968.68/x - Step 3: Cross multiply
99,162.92x = 136,729.20 × 73,968.68 - Step 4: Simplify right side
99,162.92x = 10,113,678,441.46 - Step 5: Solve for x
x = 10,113,678,441.46/99,162.92 - Step 6: Final answer
x = 101,990.53
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1.5x scale
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.