Finding the Fourth Proportional to 129,241.14, 178,368.84 and 72,652.56
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Solution
The fourth proportional to 129,241.14, 178,368.84 and 72,652.56 is: 100,269.56
Step by Step Solution
- Step 1: Write the proportion equation
129,241.14 : 178,368.84 = 72,652.56 : x - Step 2: Convert to fraction form
129,241.14/178,368.84 = 72,652.56/x - Step 3: Cross multiply
129,241.14x = 178,368.84 × 72,652.56 - Step 4: Simplify right side
129,241.14x = 12,958,952,850.23 - Step 5: Solve for x
x = 12,958,952,850.23/129,241.14 - Step 6: Final answer
x = 100,269.56
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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.