Finding the Fourth Proportional to 136,790.70, 205,315.65 and 84,302.70
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Solution
The fourth proportional to 136,790.70, 205,315.65 and 84,302.70 is: 126,533.92
Step by Step Solution
- Step 1: Write the proportion equation
136,790.70 : 205,315.65 = 84,302.70 : x - Step 2: Convert to fraction form
136,790.70/205,315.65 = 84,302.70/x - Step 3: Cross multiply
136,790.70x = 205,315.65 × 84,302.70 - Step 4: Simplify right side
136,790.70x = 17,308,663,647.26 - Step 5: Solve for x
x = 17,308,663,647.26/136,790.70 - Step 6: Final answer
x = 126,533.92
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.