Finding the Fourth Proportional to 91,813,627.20, 137,720,440.80 and 79,856,204.70
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Solution
The fourth proportional to 91,813,627.20, 137,720,440.80 and 79,856,204.70 is: 119,784,307.05
Step by Step Solution
- Step 1: Write the proportion equation
91,813,627.20 : 137,720,440.80 = 79,856,204.70 : x - Step 2: Convert to fraction form
91,813,627.20/137,720,440.80 = 79,856,204.70/x - Step 3: Cross multiply
91,813,627.20x = 137,720,440.80 × 79,856,204.70 - Step 4: Simplify right side
91,813,627.20x = 10,997,831,711,899,034 - Step 5: Solve for x
x = 10,997,831,711,899,034/91,813,627.20 - Step 6: Final answer
x = 119,784,307.05
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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.