Finding the Fourth Proportional to 135,118.36, 186,481.86 and 77,756.52
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Solution
The fourth proportional to 135,118.36, 186,481.86 and 77,756.52 is: 107,314.66
Step by Step Solution
- Step 1: Write the proportion equation
135,118.36 : 186,481.86 = 77,756.52 : x - Step 2: Convert to fraction form
135,118.36/186,481.86 = 77,756.52/x - Step 3: Cross multiply
135,118.36x = 186,481.86 × 77,756.52 - Step 4: Simplify right side
135,118.36x = 14,500,180,476.73 - Step 5: Solve for x
x = 14,500,180,476.73/135,118.36 - Step 6: Final answer
x = 107,314.66
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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.