Finding the Fourth Proportional to 99,119.92, 136,752.16 and 63,330.88
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Solution
The fourth proportional to 99,119.92, 136,752.16 and 63,330.88 is: 87,375.32
Step by Step Solution
- Step 1: Write the proportion equation
99,119.92 : 136,752.16 = 63,330.88 : x - Step 2: Convert to fraction form
99,119.92/136,752.16 = 63,330.88/x - Step 3: Cross multiply
99,119.92x = 136,752.16 × 63,330.88 - Step 4: Simplify right side
99,119.92x = 8,660,634,634.70 - Step 5: Solve for x
x = 8,660,634,634.70/99,119.92 - Step 6: Final answer
x = 87,375.32
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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.