Finding the Fourth Proportional to 209,783.79, 289,451.48 and 124,928.19
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Solution
The fourth proportional to 209,783.79, 289,451.48 and 124,928.19 is: 172,371.03
Step by Step Solution
- Step 1: Write the proportion equation
209,783.79 : 289,451.48 = 124,928.19 : x - Step 2: Convert to fraction form
209,783.79/289,451.48 = 124,928.19/x - Step 3: Cross multiply
209,783.79x = 289,451.48 × 124,928.19 - Step 4: Simplify right side
209,783.79x = 36,160,648,864.58 - Step 5: Solve for x
x = 36,160,648,864.58/209,783.79 - Step 6: Final answer
x = 172,371.03
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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.