Finding the Fourth Proportional to 93,331.20, 139,996.80 and 84,145.80
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Solution
The fourth proportional to 93,331.20, 139,996.80 and 84,145.80 is: 126,218.70
Step by Step Solution
- Step 1: Write the proportion equation
93,331.20 : 139,996.80 = 84,145.80 : x - Step 2: Convert to fraction form
93,331.20/139,996.80 = 84,145.80/x - Step 3: Cross multiply
93,331.20x = 139,996.80 × 84,145.80 - Step 4: Simplify right side
93,331.20x = 11,780,142,733.44 - Step 5: Solve for x
x = 11,780,142,733.44/93,331.20 - Step 6: Final answer
x = 126,218.70
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.