Finding the Fourth Proportional to 129,984.75, 179,378.96 and 70,368.75
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Solution
The fourth proportional to 129,984.75, 179,378.96 and 70,368.75 is: 97,108.88
Step by Step Solution
- Step 1: Write the proportion equation
129,984.75 : 179,378.96 = 70,368.75 : x - Step 2: Convert to fraction form
129,984.75/179,378.96 = 70,368.75/x - Step 3: Cross multiply
129,984.75x = 179,378.96 × 70,368.75 - Step 4: Simplify right side
129,984.75x = 12,622,672,839.66 - Step 5: Solve for x
x = 12,622,672,839.66/129,984.75 - Step 6: Final answer
x = 97,108.88
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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.