Finding the Fourth Proportional to 117,072.87, 161,425.88 and 86,490.21
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Solution
The fourth proportional to 117,072.87, 161,425.88 and 86,490.21 is: 119,256.99
Step by Step Solution
- Step 1: Write the proportion equation
117,072.87 : 161,425.88 = 86,490.21 : x - Step 2: Convert to fraction form
117,072.87/161,425.88 = 86,490.21/x - Step 3: Cross multiply
117,072.87x = 161,425.88 × 86,490.21 - Step 4: Simplify right side
117,072.87x = 13,961,758,260.63 - Step 5: Solve for x
x = 13,961,758,260.63/117,072.87 - Step 6: Final answer
x = 119,256.99
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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.