Finding the Fourth Proportional to 135,347.26, 186,775.01 and 77,986.70
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Solution
The fourth proportional to 135,347.26, 186,775.01 and 77,986.70 is: 107,619.21
Step by Step Solution
- Step 1: Write the proportion equation
135,347.26 : 186,775.01 = 77,986.70 : x - Step 2: Convert to fraction form
135,347.26/186,775.01 = 77,986.70/x - Step 3: Cross multiply
135,347.26x = 186,775.01 × 77,986.70 - Step 4: Simplify right side
135,347.26x = 14,565,965,348.56 - Step 5: Solve for x
x = 14,565,965,348.56/135,347.26 - Step 6: Final answer
x = 107,619.21
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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.