Finding the Fourth Proportional to 8,138,775,809.70, 12,208,163,714.55 and 8,069,901,056.10
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Solution
The fourth proportional to 8,138,775,809.70, 12,208,163,714.55 and 8,069,901,056.10 is: 12,104,851,584.15
Step by Step Solution
- Step 1: Write the proportion equation
8,138,775,809.70 : 12,208,163,714.55 = 8,069,901,056.10 : x - Step 2: Convert to fraction form
8,138,775,809.70/12,208,163,714.55 = 8,069,901,056.10/x - Step 3: Cross multiply
8,138,775,809.70x = 12,208,163,714.55 × 8,069,901,056.10 - Step 4: Simplify right side
8,138,775,809.70x = 98,518,673,253,088,739,328 - Step 5: Solve for x
x = 98,518,673,253,088,739,328/8,138,775,809.70 - Step 6: Final answer
x = 12,104,851,584.15
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Half scale
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Double scale
Find fourth proportional to 8,138,775,810.70, 12,208,163,716.05 and 8,069,901,057.10
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.