Finding the Fourth Proportional to 78,246,143,195.70, 117,369,214,793.55 and 78,246,143,195.70
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Solution
The fourth proportional to 78,246,143,195.70, 117,369,214,793.55 and 78,246,143,195.70 is: 117,369,214,793.55
Step by Step Solution
- Step 1: Write the proportion equation
78,246,143,195.70 : 117,369,214,793.55 = 78,246,143,195.70 : x - Step 2: Convert to fraction form
78,246,143,195.70/117,369,214,793.55 = 78,246,143,195.70/x - Step 3: Cross multiply
78,246,143,195.70x = 117,369,214,793.55 × 78,246,143,195.70 - Step 4: Simplify right side
78,246,143,195.70x = 9,183,688,387,502,984,396,800 - Step 5: Solve for x
x = 9,183,688,387,502,984,396,800/78,246,143,195.70 - Step 6: Final answer
x = 117,369,214,793.55
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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.