Finding the Fourth Proportional to 149,701.83, 206,589.05 and 81,720.31
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Solution
The fourth proportional to 149,701.83, 206,589.05 and 81,720.31 is: 112,774.31
Step by Step Solution
- Step 1: Write the proportion equation
149,701.83 : 206,589.05 = 81,720.31 : x - Step 2: Convert to fraction form
149,701.83/206,589.05 = 81,720.31/x - Step 3: Cross multiply
149,701.83x = 206,589.05 × 81,720.31 - Step 4: Simplify right side
149,701.83x = 16,882,521,208.61 - Step 5: Solve for x
x = 16,882,521,208.61/149,701.83 - Step 6: Final answer
x = 112,774.31
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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.