Finding the Fourth Proportional to 135,847.16, 187,469.74 and 84,889.48
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Solution
The fourth proportional to 135,847.16, 187,469.74 and 84,889.48 is: 117,147.89
Step by Step Solution
- Step 1: Write the proportion equation
135,847.16 : 187,469.74 = 84,889.48 : x - Step 2: Convert to fraction form
135,847.16/187,469.74 = 84,889.48/x - Step 3: Cross multiply
135,847.16x = 187,469.74 × 84,889.48 - Step 4: Simplify right side
135,847.16x = 15,914,208,744.34 - Step 5: Solve for x
x = 15,914,208,744.34/135,847.16 - Step 6: Final answer
x = 117,147.89
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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.