Finding the Fourth Proportional to 140,728.84, 194,206.08 and 76,198.75
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Solution
The fourth proportional to 140,728.84, 194,206.08 and 76,198.75 is: 105,154.43
Step by Step Solution
- Step 1: Write the proportion equation
140,728.84 : 194,206.08 = 76,198.75 : x - Step 2: Convert to fraction form
140,728.84/194,206.08 = 76,198.75/x - Step 3: Cross multiply
140,728.84x = 194,206.08 × 76,198.75 - Step 4: Simplify right side
140,728.84x = 14,798,260,538.40 - Step 5: Solve for x
x = 14,798,260,538.40/140,728.84 - Step 6: Final answer
x = 105,154.43
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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.