Finding the Fourth Proportional to 210,993.55, 291,205.01 and 120,379.08
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Solution
The fourth proportional to 210,993.55, 291,205.01 and 120,379.08 is: 166,142.48
Step by Step Solution
- Step 1: Write the proportion equation
210,993.55 : 291,205.01 = 120,379.08 : x - Step 2: Convert to fraction form
210,993.55/291,205.01 = 120,379.08/x - Step 3: Cross multiply
210,993.55x = 291,205.01 × 120,379.08 - Step 4: Simplify right side
210,993.55x = 35,054,991,195.19 - Step 5: Solve for x
x = 35,054,991,195.19/210,993.55 - Step 6: Final answer
x = 166,142.48
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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.