Finding the Fourth Proportional to 106,939.04, 147,474.88 and 79,775.12
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Solution
The fourth proportional to 106,939.04, 147,474.88 and 79,775.12 is: 110,014.32
Step by Step Solution
- Step 1: Write the proportion equation
106,939.04 : 147,474.88 = 79,775.12 : x - Step 2: Convert to fraction form
106,939.04/147,474.88 = 79,775.12/x - Step 3: Cross multiply
106,939.04x = 147,474.88 × 79,775.12 - Step 4: Simplify right side
106,939.04x = 11,764,826,248.99 - Step 5: Solve for x
x = 11,764,826,248.99/106,939.04 - Step 6: Final answer
x = 110,014.32
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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.