Finding the Fourth Proportional to 86,886.16, 130,126.80 and 84,491.68
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Solution
The fourth proportional to 86,886.16, 130,126.80 and 84,491.68 is: 126,540.66
Step by Step Solution
- Step 1: Write the proportion equation
86,886.16 : 130,126.80 = 84,491.68 : x - Step 2: Convert to fraction form
86,886.16/130,126.80 = 84,491.68/x - Step 3: Cross multiply
86,886.16x = 130,126.80 × 84,491.68 - Step 4: Simplify right side
86,886.16x = 10,994,631,945.02 - Step 5: Solve for x
x = 10,994,631,945.02/86,886.16 - Step 6: Final answer
x = 126,540.66
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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.