Finding the Fourth Proportional to 154,659.93, 213,448.41 and 86,695.26
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Solution
The fourth proportional to 154,659.93, 213,448.41 and 86,695.26 is: 119,649.38
Step by Step Solution
- Step 1: Write the proportion equation
154,659.93 : 213,448.41 = 86,695.26 : x - Step 2: Convert to fraction form
154,659.93/213,448.41 = 86,695.26/x - Step 3: Cross multiply
154,659.93x = 213,448.41 × 86,695.26 - Step 4: Simplify right side
154,659.93x = 18,504,965,401.54 - Step 5: Solve for x
x = 18,504,965,401.54/154,659.93 - Step 6: Final answer
x = 119,649.38
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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.