Finding the Fourth Proportional to 68,128,117.20, 102,192,175.80 and 68,128,117.20
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Solution
The fourth proportional to 68,128,117.20, 102,192,175.80 and 68,128,117.20 is: 102,192,175.80
Step by Step Solution
- Step 1: Write the proportion equation
68,128,117.20 : 102,192,175.80 = 68,128,117.20 : x - Step 2: Convert to fraction form
68,128,117.20/102,192,175.80 = 68,128,117.20/x - Step 3: Cross multiply
68,128,117.20x = 102,192,175.80 × 68,128,117.20 - Step 4: Simplify right side
68,128,117.20x = 6,962,160,529,825,404 - Step 5: Solve for x
x = 6,962,160,529,825,404/68,128,117.20 - Step 6: Final answer
x = 102,192,175.80
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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.