Finding the Fourth Proportional to 135,188.10, 186,556.05 and 74,757.06
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Solution
The fourth proportional to 135,188.10, 186,556.05 and 74,757.06 is: 103,162.79
Step by Step Solution
- Step 1: Write the proportion equation
135,188.10 : 186,556.05 = 74,757.06 : x - Step 2: Convert to fraction form
135,188.10/186,556.05 = 74,757.06/x - Step 3: Cross multiply
135,188.10x = 186,556.05 × 74,757.06 - Step 4: Simplify right side
135,188.10x = 13,946,381,823.21 - Step 5: Solve for x
x = 13,946,381,823.21/135,188.10 - Step 6: Final answer
x = 103,162.79
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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.