Finding the Fourth Proportional to 128,367,040.42, 177,146,334.19 and 69,629,634.62
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Solution
The fourth proportional to 128,367,040.42, 177,146,334.19 and 69,629,634.62 is: 96,088,797.27
Step by Step Solution
- Step 1: Write the proportion equation
128,367,040.42 : 177,146,334.19 = 69,629,634.62 : x - Step 2: Convert to fraction form
128,367,040.42/177,146,334.19 = 69,629,634.62/x - Step 3: Cross multiply
128,367,040.42x = 177,146,334.19 × 69,629,634.62 - Step 4: Simplify right side
128,367,040.42x = 12,334,634,523,787,718 - Step 5: Solve for x
x = 12,334,634,523,787,718/128,367,040.42 - Step 6: Final answer
x = 96,088,797.27
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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.