Finding the Fourth Proportional to 149,423.10, 206,197.89 and 81,438.65
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Solution
The fourth proportional to 149,423.10, 206,197.89 and 81,438.65 is: 112,382.07
Step by Step Solution
- Step 1: Write the proportion equation
149,423.10 : 206,197.89 = 81,438.65 : x - Step 2: Convert to fraction form
149,423.10/206,197.89 = 81,438.65/x - Step 3: Cross multiply
149,423.10x = 206,197.89 × 81,438.65 - Step 4: Simplify right side
149,423.10x = 16,792,477,231.31 - Step 5: Solve for x
x = 16,792,477,231.31/149,423.10 - Step 6: Final answer
x = 112,382.07
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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.