Finding the Fourth Proportional to 116,765.99, 161,175.12 and 86,541.65
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Solution
The fourth proportional to 116,765.99, 161,175.12 and 86,541.65 is: 119,455.68
Step by Step Solution
- Step 1: Write the proportion equation
116,765.99 : 161,175.12 = 86,541.65 : x - Step 2: Convert to fraction form
116,765.99/161,175.12 = 86,541.65/x - Step 3: Cross multiply
116,765.99x = 161,175.12 × 86,541.65 - Step 4: Simplify right side
116,765.99x = 13,948,360,823.75 - Step 5: Solve for x
x = 13,948,360,823.75/116,765.99 - Step 6: Final answer
x = 119,455.68
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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.