Finding the Fourth Proportional to 126,623.68, 174,775.20 and 78,848.80
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Solution
The fourth proportional to 126,623.68, 174,775.20 and 78,848.80 is: 108,832.84
Step by Step Solution
- Step 1: Write the proportion equation
126,623.68 : 174,775.20 = 78,848.80 : x - Step 2: Convert to fraction form
126,623.68/174,775.20 = 78,848.80/x - Step 3: Cross multiply
126,623.68x = 174,775.20 × 78,848.80 - Step 4: Simplify right side
126,623.68x = 13,780,814,789.76 - Step 5: Solve for x
x = 13,780,814,789.76/126,623.68 - Step 6: Final answer
x = 108,832.84
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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.