Finding the Fourth Proportional to 18,197,891,125.90, 27,296,836,688.85 and 7,156,767,388.30
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Solution
The fourth proportional to 18,197,891,125.90, 27,296,836,688.85 and 7,156,767,388.30 is: 10,735,151,082.45
Step by Step Solution
- Step 1: Write the proportion equation
18,197,891,125.90 : 27,296,836,688.85 = 7,156,767,388.30 : x - Step 2: Convert to fraction form
18,197,891,125.90/27,296,836,688.85 = 7,156,767,388.30/x - Step 3: Cross multiply
18,197,891,125.90x = 27,296,836,688.85 × 7,156,767,388.30 - Step 4: Simplify right side
18,197,891,125.90x = 195,357,110,618,512,621,568 - Step 5: Solve for x
x = 195,357,110,618,512,621,568/18,197,891,125.90 - Step 6: Final answer
x = 10,735,151,082.45
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Double scale
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Similar ratio
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1.5x scale
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.