Finding the Fourth Proportional to 129,742.60, 194,613.90 and 98,249.80
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Solution
The fourth proportional to 129,742.60, 194,613.90 and 98,249.80 is: 147,374.70
Step by Step Solution
- Step 1: Write the proportion equation
129,742.60 : 194,613.90 = 98,249.80 : x - Step 2: Convert to fraction form
129,742.60/194,613.90 = 98,249.80/x - Step 3: Cross multiply
129,742.60x = 194,613.90 × 98,249.80 - Step 4: Simplify right side
129,742.60x = 19,120,776,752.22 - Step 5: Solve for x
x = 19,120,776,752.22/129,742.60 - Step 6: Final answer
x = 147,374.70
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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.