Finding the Fourth Proportional to 129,241.14, 193,829.30 and 91,691.70
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Solution
The fourth proportional to 129,241.14, 193,829.30 and 91,691.70 is: 137,514.56
Step by Step Solution
- Step 1: Write the proportion equation
129,241.14 : 193,829.30 = 91,691.70 : x - Step 2: Convert to fraction form
129,241.14/193,829.30 = 91,691.70/x - Step 3: Cross multiply
129,241.14x = 193,829.30 × 91,691.70 - Step 4: Simplify right side
129,241.14x = 17,772,538,026.81 - Step 5: Solve for x
x = 17,772,538,026.81/129,241.14 - Step 6: Final answer
x = 137,514.56
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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.