Finding the Fourth Proportional to 135,116.05, 186,478.67 and 77,754.20
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Solution
The fourth proportional to 135,116.05, 186,478.67 and 77,754.20 is: 107,311.45
Step by Step Solution
- Step 1: Write the proportion equation
135,116.05 : 186,478.67 = 77,754.20 : x - Step 2: Convert to fraction form
135,116.05/186,478.67 = 77,754.20/x - Step 3: Cross multiply
135,116.05x = 186,478.67 × 77,754.20 - Step 4: Simplify right side
135,116.05x = 14,499,499,064.91 - Step 5: Solve for x
x = 14,499,499,064.91/135,116.05 - Step 6: Final answer
x = 107,311.45
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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.