Finding the Fourth Proportional to 157,757,158.83, 217,716,144.80 and 87,191,250.99
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Solution
The fourth proportional to 157,757,158.83, 217,716,144.80 and 87,191,250.99 is: 120,330,152.79
Step by Step Solution
- Step 1: Write the proportion equation
157,757,158.83 : 217,716,144.80 = 87,191,250.99 : x - Step 2: Convert to fraction form
157,757,158.83/217,716,144.80 = 87,191,250.99/x - Step 3: Cross multiply
157,757,158.83x = 217,716,144.80 × 87,191,250.99 - Step 4: Simplify right side
157,757,158.83x = 18,982,943,025,831,984 - Step 5: Solve for x
x = 18,982,943,025,831,984/157,757,158.83 - Step 6: Final answer
x = 120,330,152.79
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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.