Finding the Fourth Proportional to 134,555.75, 185,686.94 and 74,939.75
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Solution
The fourth proportional to 134,555.75, 185,686.94 and 74,939.75 is: 103,416.86
Step by Step Solution
- Step 1: Write the proportion equation
134,555.75 : 185,686.94 = 74,939.75 : x - Step 2: Convert to fraction form
134,555.75/185,686.94 = 74,939.75/x - Step 3: Cross multiply
134,555.75x = 185,686.94 × 74,939.75 - Step 4: Simplify right side
134,555.75x = 13,915,332,861.87 - Step 5: Solve for x
x = 13,915,332,861.87/134,555.75 - Step 6: Final answer
x = 103,416.86
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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.