Finding the Fourth Proportional to 209,525.44, 289,106.80 and 136,909.12
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Solution
The fourth proportional to 209,525.44, 289,106.80 and 136,909.12 is: 188,909.55
Step by Step Solution
- Step 1: Write the proportion equation
209,525.44 : 289,106.80 = 136,909.12 : x - Step 2: Convert to fraction form
209,525.44/289,106.80 = 136,909.12/x - Step 3: Cross multiply
209,525.44x = 289,106.80 × 136,909.12 - Step 4: Simplify right side
209,525.44x = 39,581,357,574.02 - Step 5: Solve for x
x = 39,581,357,574.02/209,525.44 - Step 6: Final answer
x = 188,909.55
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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.