Finding the Fourth Proportional to 106,728.41, 147,285.66 and 58,331.31
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Solution
The fourth proportional to 106,728.41, 147,285.66 and 58,331.31 is: 80,497.46
Step by Step Solution
- Step 1: Write the proportion equation
106,728.41 : 147,285.66 = 58,331.31 : x - Step 2: Convert to fraction form
106,728.41/147,285.66 = 58,331.31/x - Step 3: Cross multiply
106,728.41x = 147,285.66 × 58,331.31 - Step 4: Simplify right side
106,728.41x = 8,591,366,263.08 - Step 5: Solve for x
x = 8,591,366,263.08/106,728.41 - Step 6: Final answer
x = 80,497.46
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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.