Finding the Fourth Proportional to 106,778.17, 147,171.92 and 97,728.41
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Solution
The fourth proportional to 106,778.17, 147,171.92 and 97,728.41 is: 134,698.66
Step by Step Solution
- Step 1: Write the proportion equation
106,778.17 : 147,171.92 = 97,728.41 : x - Step 2: Convert to fraction form
106,778.17/147,171.92 = 97,728.41/x - Step 3: Cross multiply
106,778.17x = 147,171.92 × 97,728.41 - Step 4: Simplify right side
106,778.17x = 14,382,876,513.75 - Step 5: Solve for x
x = 14,382,876,513.75/106,778.17 - Step 6: Final answer
x = 134,698.66
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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.