Finding the Fourth Proportional to 129,998.99, 179,399.79 and 76,284.90
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Solution
The fourth proportional to 129,998.99, 179,399.79 and 76,284.90 is: 105,273.85
Step by Step Solution
- Step 1: Write the proportion equation
129,998.99 : 179,399.79 = 76,284.90 : x - Step 2: Convert to fraction form
129,998.99/179,399.79 = 76,284.90/x - Step 3: Cross multiply
129,998.99x = 179,399.79 × 76,284.90 - Step 4: Simplify right side
129,998.99x = 13,685,495,040.17 - Step 5: Solve for x
x = 13,685,495,040.17/129,998.99 - Step 6: Final answer
x = 105,273.85
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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.