Finding the Fourth Proportional to 126,748.18, 174,902.76 and 72,997.19
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Solution
The fourth proportional to 126,748.18, 174,902.76 and 72,997.19 is: 100,730.52
Step by Step Solution
- Step 1: Write the proportion equation
126,748.18 : 174,902.76 = 72,997.19 : x - Step 2: Convert to fraction form
126,748.18/174,902.76 = 72,997.19/x - Step 3: Cross multiply
126,748.18x = 174,902.76 × 72,997.19 - Step 4: Simplify right side
126,748.18x = 12,767,410,003.24 - Step 5: Solve for x
x = 12,767,410,003.24/126,748.18 - Step 6: Final answer
x = 100,730.52
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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.