Finding the Fourth Proportional to 135,434.21, 186,930.30 and 90,114.09
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Solution
The fourth proportional to 135,434.21, 186,930.30 and 90,114.09 is: 124,378.14
Step by Step Solution
- Step 1: Write the proportion equation
135,434.21 : 186,930.30 = 90,114.09 : x - Step 2: Convert to fraction form
135,434.21/186,930.30 = 90,114.09/x - Step 3: Cross multiply
135,434.21x = 186,930.30 × 90,114.09 - Step 4: Simplify right side
135,434.21x = 16,845,053,877.93 - Step 5: Solve for x
x = 16,845,053,877.93/135,434.21 - Step 6: Final answer
x = 124,378.14
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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.