Finding the Fourth Proportional to 138,170,620.88, 190,676,378.64 and 75,447,154.36
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Solution
The fourth proportional to 138,170,620.88, 190,676,378.64 and 75,447,154.36 is: 104,117,576.37
Step by Step Solution
- Step 1: Write the proportion equation
138,170,620.88 : 190,676,378.64 = 75,447,154.36 : x - Step 2: Convert to fraction form
138,170,620.88/190,676,378.64 = 75,447,154.36/x - Step 3: Cross multiply
138,170,620.88x = 190,676,378.64 × 75,447,154.36 - Step 4: Simplify right side
138,170,620.88x = 14,385,990,172,635,054 - Step 5: Solve for x
x = 14,385,990,172,635,054/138,170,620.88 - Step 6: Final answer
x = 104,117,576.37
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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.