Finding the Fourth Proportional to 86,789.80, 130,184.70 and 84,845.80
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Solution
The fourth proportional to 86,789.80, 130,184.70 and 84,845.80 is: 127,268.70
Step by Step Solution
- Step 1: Write the proportion equation
86,789.80 : 130,184.70 = 84,845.80 : x - Step 2: Convert to fraction form
86,789.80/130,184.70 = 84,845.80/x - Step 3: Cross multiply
86,789.80x = 130,184.70 × 84,845.80 - Step 4: Simplify right side
86,789.80x = 11,045,625,019.26 - Step 5: Solve for x
x = 11,045,625,019.26/86,789.80 - Step 6: Final answer
x = 127,268.70
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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.