Finding the Fourth Proportional to 117,105.54, 161,605.59 and 63,390.99
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Solution
The fourth proportional to 117,105.54, 161,605.59 and 63,390.99 is: 87,479.54
Step by Step Solution
- Step 1: Write the proportion equation
117,105.54 : 161,605.59 = 63,390.99 : x - Step 2: Convert to fraction form
117,105.54/161,605.59 = 63,390.99/x - Step 3: Cross multiply
117,105.54x = 161,605.59 × 63,390.99 - Step 4: Simplify right side
117,105.54x = 10,244,338,339.63 - Step 5: Solve for x
x = 10,244,338,339.63/117,105.54 - Step 6: Final answer
x = 87,479.54
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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.