Finding the Fourth Proportional to 98,723.61, 136,096.88 and 70,380.09
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Solution
The fourth proportional to 98,723.61, 136,096.88 and 70,380.09 is: 97,023.50
Step by Step Solution
- Step 1: Write the proportion equation
98,723.61 : 136,096.88 = 70,380.09 : x - Step 2: Convert to fraction form
98,723.61/136,096.88 = 70,380.09/x - Step 3: Cross multiply
98,723.61x = 136,096.88 × 70,380.09 - Step 4: Simplify right side
98,723.61x = 9,578,510,311.22 - Step 5: Solve for x
x = 9,578,510,311.22/98,723.61 - Step 6: Final answer
x = 97,023.50
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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.