Finding the Fourth Proportional to 157,882,961.21, 217,867,425.84 and 91,798,771.10
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Solution
The fourth proportional to 157,882,961.21, 217,867,425.84 and 91,798,771.10 is: 126,675,873.07
Step by Step Solution
- Step 1: Write the proportion equation
157,882,961.21 : 217,867,425.84 = 91,798,771.10 : x - Step 2: Convert to fraction form
157,882,961.21/217,867,425.84 = 91,798,771.10/x - Step 3: Cross multiply
157,882,961.21x = 217,867,425.84 × 91,798,771.10 - Step 4: Simplify right side
157,882,961.21x = 19,999,961,953,743,048 - Step 5: Solve for x
x = 19,999,961,953,743,048/157,882,961.21 - Step 6: Final answer
x = 126,675,873.07
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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.