Finding the Fourth Proportional to 138,320,282.41, 190,882,175.73 and 79,581,769.44
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Solution
The fourth proportional to 138,320,282.41, 190,882,175.73 and 79,581,769.44 is: 109,822,948.84
Step by Step Solution
- Step 1: Write the proportion equation
138,320,282.41 : 190,882,175.73 = 79,581,769.44 : x - Step 2: Convert to fraction form
138,320,282.41/190,882,175.73 = 79,581,769.44/x - Step 3: Cross multiply
138,320,282.41x = 190,882,175.73 × 79,581,769.44 - Step 4: Simplify right side
138,320,282.41x = 15,190,741,298,733,046 - Step 5: Solve for x
x = 15,190,741,298,733,046/138,320,282.41 - Step 6: Final answer
x = 109,822,948.84
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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.