Finding the Fourth Proportional to 140,710.68, 194,176.80 and 80,280.09
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Solution
The fourth proportional to 140,710.68, 194,176.80 and 80,280.09 is: 110,784.28
Step by Step Solution
- Step 1: Write the proportion equation
140,710.68 : 194,176.80 = 80,280.09 : x - Step 2: Convert to fraction form
140,710.68/194,176.80 = 80,280.09/x - Step 3: Cross multiply
140,710.68x = 194,176.80 × 80,280.09 - Step 4: Simplify right side
140,710.68x = 15,588,530,979.91 - Step 5: Solve for x
x = 15,588,530,979.91/140,710.68 - Step 6: Final answer
x = 110,784.28
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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.