Finding the Fourth Proportional to 126,435.60, 174,511.80 and 72,748.80
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Solution
The fourth proportional to 126,435.60, 174,511.80 and 72,748.80 is: 100,410.99
Step by Step Solution
- Step 1: Write the proportion equation
126,435.60 : 174,511.80 = 72,748.80 : x - Step 2: Convert to fraction form
126,435.60/174,511.80 = 72,748.80/x - Step 3: Cross multiply
126,435.60x = 174,511.80 × 72,748.80 - Step 4: Simplify right side
126,435.60x = 12,695,524,035.84 - Step 5: Solve for x
x = 12,695,524,035.84/126,435.60 - Step 6: Final answer
x = 100,410.99
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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.