Finding the Fourth Proportional to 85,268.60, 128,183.21 and 79,103.08
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Solution
The fourth proportional to 85,268.60, 128,183.21 and 79,103.08 is: 118,914.66
Step by Step Solution
- Step 1: Write the proportion equation
85,268.60 : 128,183.21 = 79,103.08 : x - Step 2: Convert to fraction form
85,268.60/128,183.21 = 79,103.08/x - Step 3: Cross multiply
85,268.60x = 128,183.21 × 79,103.08 - Step 4: Simplify right side
85,268.60x = 10,139,686,776.64 - Step 5: Solve for x
x = 10,139,686,776.64/85,268.60 - Step 6: Final answer
x = 118,914.66
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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.