Finding the Fourth Proportional to 89,688.15, 134,532.39 and 84,207.66
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Solution
The fourth proportional to 89,688.15, 134,532.39 and 84,207.66 is: 126,311.65
Step by Step Solution
- Step 1: Write the proportion equation
89,688.15 : 134,532.39 = 84,207.66 : x - Step 2: Convert to fraction form
89,688.15/134,532.39 = 84,207.66/x - Step 3: Cross multiply
89,688.15x = 134,532.39 × 84,207.66 - Step 4: Simplify right side
89,688.15x = 11,328,658,371.31 - Step 5: Solve for x
x = 11,328,658,371.31/89,688.15 - Step 6: Final answer
x = 126,311.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.