Finding the Fourth Proportional to 135,720.36, 187,256.34 and 81,250.02
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Solution
The fourth proportional to 135,720.36, 187,256.34 and 81,250.02 is: 112,102.42
Step by Step Solution
- Step 1: Write the proportion equation
135,720.36 : 187,256.34 = 81,250.02 : x - Step 2: Convert to fraction form
135,720.36/187,256.34 = 81,250.02/x - Step 3: Cross multiply
135,720.36x = 187,256.34 × 81,250.02 - Step 4: Simplify right side
135,720.36x = 15,214,581,370.13 - Step 5: Solve for x
x = 15,214,581,370.13/135,720.36 - Step 6: Final answer
x = 112,102.42
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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.