Finding the Fourth Proportional to 135,321.77, 186,747.12 and 87,658.07
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Solution
The fourth proportional to 135,321.77, 186,747.12 and 87,658.07 is: 120,970.12
Step by Step Solution
- Step 1: Write the proportion equation
135,321.77 : 186,747.12 = 87,658.07 : x - Step 2: Convert to fraction form
135,321.77/186,747.12 = 87,658.07/x - Step 3: Cross multiply
135,321.77x = 186,747.12 × 87,658.07 - Step 4: Simplify right side
135,321.77x = 16,369,891,183.52 - Step 5: Solve for x
x = 16,369,891,183.52/135,321.77 - Step 6: Final answer
x = 120,970.12
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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.