Finding the Fourth Proportional to 145,541,706.80, 218,312,560.20 and 72,769,719.20
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Solution
The fourth proportional to 145,541,706.80, 218,312,560.20 and 72,769,719.20 is: 109,154,578.80
Step by Step Solution
- Step 1: Write the proportion equation
145,541,706.80 : 218,312,560.20 = 72,769,719.20 : x - Step 2: Convert to fraction form
145,541,706.80/218,312,560.20 = 72,769,719.20/x - Step 3: Cross multiply
145,541,706.80x = 218,312,560.20 × 72,769,719.20 - Step 4: Simplify right side
145,541,706.80x = 15,886,543,703,587,096 - Step 5: Solve for x
x = 15,886,543,703,587,096/145,541,706.80 - Step 6: Final answer
x = 109,154,578.80
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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.