Finding the Fourth Proportional to 143,950,910.61, 198,651,658.29 and 77,871,245.99
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Solution
The fourth proportional to 143,950,910.61, 198,651,658.29 and 77,871,245.99 is: 107,461,995.78
Step by Step Solution
- Step 1: Write the proportion equation
143,950,910.61 : 198,651,658.29 = 77,871,245.99 : x - Step 2: Convert to fraction form
143,950,910.61/198,651,658.29 = 77,871,245.99/x - Step 3: Cross multiply
143,950,910.61x = 198,651,658.29 × 77,871,245.99 - Step 4: Simplify right side
143,950,910.61x = 15,469,252,148,028,754 - Step 5: Solve for x
x = 15,469,252,148,028,754/143,950,910.61 - Step 6: Final answer
x = 107,461,995.78
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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.