Finding the Fourth Proportional to 140,112.12, 193,358.99 and 79,691.46
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Solution
The fourth proportional to 140,112.12, 193,358.99 and 79,691.46 is: 109,976.64
Step by Step Solution
- Step 1: Write the proportion equation
140,112.12 : 193,358.99 = 79,691.46 : x - Step 2: Convert to fraction form
140,112.12/193,358.99 = 79,691.46/x - Step 3: Cross multiply
140,112.12x = 193,358.99 × 79,691.46 - Step 4: Simplify right side
140,112.12x = 15,409,060,217.23 - Step 5: Solve for x
x = 15,409,060,217.23/140,112.12 - Step 6: Final answer
x = 109,976.64
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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.