Finding the Fourth Proportional to 117,027.28, 161,515.74 and 76,857.58
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Solution
The fourth proportional to 117,027.28, 161,515.74 and 76,857.58 is: 106,075.34
Step by Step Solution
- Step 1: Write the proportion equation
117,027.28 : 161,515.74 = 76,857.58 : x - Step 2: Convert to fraction form
117,027.28/161,515.74 = 76,857.58/x - Step 3: Cross multiply
117,027.28x = 161,515.74 × 76,857.58 - Step 4: Simplify right side
117,027.28x = 12,413,708,908.31 - Step 5: Solve for x
x = 12,413,708,908.31/117,027.28 - Step 6: Final answer
x = 106,075.34
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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.