Finding the Fourth Proportional to 149,366.18, 206,122.92 and 81,384.05
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Solution
The fourth proportional to 149,366.18, 206,122.92 and 81,384.05 is: 112,308.68
Step by Step Solution
- Step 1: Write the proportion equation
149,366.18 : 206,122.92 = 81,384.05 : x - Step 2: Convert to fraction form
149,366.18/206,122.92 = 81,384.05/x - Step 3: Cross multiply
149,366.18x = 206,122.92 × 81,384.05 - Step 4: Simplify right side
149,366.18x = 16,775,118,027.43 - Step 5: Solve for x
x = 16,775,118,027.43/149,366.18 - Step 6: Final answer
x = 112,308.68
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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.