Finding the Fourth Proportional to 102,571,119.09, 141,535,175.99 and 81,716,045.85
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Solution
The fourth proportional to 102,571,119.09, 141,535,175.99 and 81,716,045.85 is: 112,757,811.68
Step by Step Solution
- Step 1: Write the proportion equation
102,571,119.09 : 141,535,175.99 = 81,716,045.85 : x - Step 2: Convert to fraction form
102,571,119.09/141,535,175.99 = 81,716,045.85/x - Step 3: Cross multiply
102,571,119.09x = 141,535,175.99 × 81,716,045.85 - Step 4: Simplify right side
102,571,119.09x = 11,565,694,930,178,080 - Step 5: Solve for x
x = 11,565,694,930,178,080/102,571,119.09 - Step 6: Final answer
x = 112,757,811.68
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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.