Finding the Fourth Proportional to 113,355,706.17, 156,479,142.69 and 76,207,531.05
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Solution
The fourth proportional to 113,355,706.17, 156,479,142.69 and 76,207,531.05 is: 105,198,842.90
Step by Step Solution
- Step 1: Write the proportion equation
113,355,706.17 : 156,479,142.69 = 76,207,531.05 : x - Step 2: Convert to fraction form
113,355,706.17/156,479,142.69 = 76,207,531.05/x - Step 3: Cross multiply
113,355,706.17x = 156,479,142.69 × 76,207,531.05 - Step 4: Simplify right side
113,355,706.17x = 11,924,889,125,225,554 - Step 5: Solve for x
x = 11,924,889,125,225,554/113,355,706.17 - Step 6: Final answer
x = 105,198,842.90
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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.