Finding the Fourth Proportional to 135,699.44, 187,260.75 and 81,975.06
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Solution
The fourth proportional to 135,699.44, 187,260.75 and 81,975.06 is: 113,122.88
Step by Step Solution
- Step 1: Write the proportion equation
135,699.44 : 187,260.75 = 81,975.06 : x - Step 2: Convert to fraction form
135,699.44/187,260.75 = 81,975.06/x - Step 3: Cross multiply
135,699.44x = 187,260.75 × 81,975.06 - Step 4: Simplify right side
135,699.44x = 15,350,711,216.90 - Step 5: Solve for x
x = 15,350,711,216.90/135,699.44 - Step 6: Final answer
x = 113,122.88
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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.