Finding the Fourth Proportional to 129,098.16, 193,230.60 and 66,682.80
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Solution
The fourth proportional to 129,098.16, 193,230.60 and 66,682.80 is: 99,808.99
Step by Step Solution
- Step 1: Write the proportion equation
129,098.16 : 193,230.60 = 66,682.80 : x - Step 2: Convert to fraction form
129,098.16/193,230.60 = 66,682.80/x - Step 3: Cross multiply
129,098.16x = 193,230.60 × 66,682.80 - Step 4: Simplify right side
129,098.16x = 12,885,157,453.68 - Step 5: Solve for x
x = 12,885,157,453.68/129,098.16 - Step 6: Final answer
x = 99,808.99
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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.