Finding the Fourth Proportional to 129,569.40, 194,645.70 and 126,070.20
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Solution
The fourth proportional to 129,569.40, 194,645.70 and 126,070.20 is: 189,389.02
Step by Step Solution
- Step 1: Write the proportion equation
129,569.40 : 194,645.70 = 126,070.20 : x - Step 2: Convert to fraction form
129,569.40/194,645.70 = 126,070.20/x - Step 3: Cross multiply
129,569.40x = 194,645.70 × 126,070.20 - Step 4: Simplify right side
129,569.40x = 24,539,022,328.14 - Step 5: Solve for x
x = 24,539,022,328.14/129,569.40 - Step 6: Final answer
x = 189,389.02
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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.