Finding the Fourth Proportional to 99,651,970.20, 149,477,955.30 and 83,496,163.80
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Solution
The fourth proportional to 99,651,970.20, 149,477,955.30 and 83,496,163.80 is: 125,244,245.70
Step by Step Solution
- Step 1: Write the proportion equation
99,651,970.20 : 149,477,955.30 = 83,496,163.80 : x - Step 2: Convert to fraction form
99,651,970.20/149,477,955.30 = 83,496,163.80/x - Step 3: Cross multiply
99,651,970.20x = 149,477,955.30 × 83,496,163.80 - Step 4: Simplify right side
99,651,970.20x = 12,480,835,840,217,878 - Step 5: Solve for x
x = 12,480,835,840,217,878/99,651,970.20 - Step 6: Final answer
x = 125,244,245.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.