Finding the Fourth Proportional to 149,788.08, 206,709.21 and 81,807.09
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Solution
The fourth proportional to 149,788.08, 206,709.21 and 81,807.09 is: 112,894.69
Step by Step Solution
- Step 1: Write the proportion equation
149,788.08 : 206,709.21 = 81,807.09 : x - Step 2: Convert to fraction form
149,788.08/206,709.21 = 81,807.09/x - Step 3: Cross multiply
149,788.08x = 206,709.21 × 81,807.09 - Step 4: Simplify right side
149,788.08x = 16,910,278,946.30 - Step 5: Solve for x
x = 16,910,278,946.30/149,788.08 - Step 6: Final answer
x = 112,894.69
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1.5x scale
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.