Finding the Fourth Proportional to 135,164.36, 186,549.90 and 78,609.08
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Solution
The fourth proportional to 135,164.36, 186,549.90 and 78,609.08 is: 108,493.96
Step by Step Solution
- Step 1: Write the proportion equation
135,164.36 : 186,549.90 = 78,609.08 : x - Step 2: Convert to fraction form
135,164.36/186,549.90 = 78,609.08/x - Step 3: Cross multiply
135,164.36x = 186,549.90 × 78,609.08 - Step 4: Simplify right side
135,164.36x = 14,664,516,013.09 - Step 5: Solve for x
x = 14,664,516,013.09/135,164.36 - Step 6: Final answer
x = 108,493.96
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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.