Finding the Fourth Proportional to 128,771.21, 193,209.96 and 69,537.13
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Solution
The fourth proportional to 128,771.21, 193,209.96 and 69,537.13 is: 104,334.39
Step by Step Solution
- Step 1: Write the proportion equation
128,771.21 : 193,209.96 = 69,537.13 : x - Step 2: Convert to fraction form
128,771.21/193,209.96 = 69,537.13/x - Step 3: Cross multiply
128,771.21x = 193,209.96 × 69,537.13 - Step 4: Simplify right side
128,771.21x = 13,435,266,105.81 - Step 5: Solve for x
x = 13,435,266,105.81/128,771.21 - Step 6: Final answer
x = 104,334.39
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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.