Finding the Fourth Proportional to 106,641.81, 147,195.09 and 66,331.62
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Solution
The fourth proportional to 106,641.81, 147,195.09 and 66,331.62 is: 91,555.92
Step by Step Solution
- Step 1: Write the proportion equation
106,641.81 : 147,195.09 = 66,331.62 : x - Step 2: Convert to fraction form
106,641.81/147,195.09 = 66,331.62/x - Step 3: Cross multiply
106,641.81x = 147,195.09 × 66,331.62 - Step 4: Simplify right side
106,641.81x = 9,763,688,775.75 - Step 5: Solve for x
x = 9,763,688,775.75/106,641.81 - Step 6: Final answer
x = 91,555.92
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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.