Finding the Fourth Proportional to 136,121.84, 187,852.20 and 82,416.68
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Solution
The fourth proportional to 136,121.84, 187,852.20 and 82,416.68 is: 113,737.48
Step by Step Solution
- Step 1: Write the proportion equation
136,121.84 : 187,852.20 = 82,416.68 : x - Step 2: Convert to fraction form
136,121.84/187,852.20 = 82,416.68/x - Step 3: Cross multiply
136,121.84x = 187,852.20 × 82,416.68 - Step 4: Simplify right side
136,121.84x = 15,482,154,654.70 - Step 5: Solve for x
x = 15,482,154,654.70/136,121.84 - Step 6: Final answer
x = 113,737.48
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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.