Finding the Fourth Proportional to 136,615.80, 204,923.70 and 83,471.70
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Solution
The fourth proportional to 136,615.80, 204,923.70 and 83,471.70 is: 125,207.55
Step by Step Solution
- Step 1: Write the proportion equation
136,615.80 : 204,923.70 = 83,471.70 : x - Step 2: Convert to fraction form
136,615.80/204,923.70 = 83,471.70/x - Step 3: Cross multiply
136,615.80x = 204,923.70 × 83,471.70 - Step 4: Simplify right side
136,615.80x = 17,105,329,609.29 - Step 5: Solve for x
x = 17,105,329,609.29/136,615.80 - Step 6: Final answer
x = 125,207.55
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1.5x scale
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.