Finding the Fourth Proportional to 128,600.73, 177,464.99 and 71,237.75
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Solution
The fourth proportional to 128,600.73, 177,464.99 and 71,237.75 is: 98,305.86
Step by Step Solution
- Step 1: Write the proportion equation
128,600.73 : 177,464.99 = 71,237.75 : x - Step 2: Convert to fraction form
128,600.73/177,464.99 = 71,237.75/x - Step 3: Cross multiply
128,600.73x = 177,464.99 × 71,237.75 - Step 4: Simplify right side
128,600.73x = 12,642,205,882.14 - Step 5: Solve for x
x = 12,642,205,882.14/128,600.73 - Step 6: Final answer
x = 98,305.86
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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.