Finding the Fourth Proportional to 102,700.96, 141,725.60 and 57,379.68
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Solution
The fourth proportional to 102,700.96, 141,725.60 and 57,379.68 is: 79,182.99
Step by Step Solution
- Step 1: Write the proportion equation
102,700.96 : 141,725.60 = 57,379.68 : x - Step 2: Convert to fraction form
102,700.96/141,725.60 = 57,379.68/x - Step 3: Cross multiply
102,700.96x = 141,725.60 × 57,379.68 - Step 4: Simplify right side
102,700.96x = 8,132,169,575.81 - Step 5: Solve for x
x = 8,132,169,575.81/102,700.96 - Step 6: Final answer
x = 79,182.99
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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.