Finding the Fourth Proportional to 129,193.84, 178,176.48 and 83,827.12
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Solution
The fourth proportional to 129,193.84, 178,176.48 and 83,827.12 is: 115,609.39
Step by Step Solution
- Step 1: Write the proportion equation
129,193.84 : 178,176.48 = 83,827.12 : x - Step 2: Convert to fraction form
129,193.84/178,176.48 = 83,827.12/x - Step 3: Cross multiply
129,193.84x = 178,176.48 × 83,827.12 - Step 4: Simplify right side
129,193.84x = 14,936,021,170.14 - Step 5: Solve for x
x = 14,936,021,170.14/129,193.84 - Step 6: Final answer
x = 115,609.39
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1.5x scale
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.