Finding the Fourth Proportional to 134,889.68, 186,118.88 and 78,270.68
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Solution
The fourth proportional to 134,889.68, 186,118.88 and 78,270.68 is: 107,996.78
Step by Step Solution
- Step 1: Write the proportion equation
134,889.68 : 186,118.88 = 78,270.68 : x - Step 2: Convert to fraction form
134,889.68/186,118.88 = 78,270.68/x - Step 3: Cross multiply
134,889.68x = 186,118.88 × 78,270.68 - Step 4: Simplify right side
134,889.68x = 14,567,651,298.44 - Step 5: Solve for x
x = 14,567,651,298.44/134,889.68 - Step 6: Final answer
x = 107,996.78
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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.