Finding the Fourth Proportional to 135,399.13, 186,857.21 and 81,682.99
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Solution
The fourth proportional to 135,399.13, 186,857.21 and 81,682.99 is: 112,726.40
Step by Step Solution
- Step 1: Write the proportion equation
135,399.13 : 186,857.21 = 81,682.99 : x - Step 2: Convert to fraction form
135,399.13/186,857.21 = 81,682.99/x - Step 3: Cross multiply
135,399.13x = 186,857.21 × 81,682.99 - Step 4: Simplify right side
135,399.13x = 15,263,055,615.86 - Step 5: Solve for x
x = 15,263,055,615.86/135,399.13 - Step 6: Final answer
x = 112,726.40
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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.