Finding the Fourth Proportional to 91,466.25, 137,884.98 and 85,370.06
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Solution
The fourth proportional to 91,466.25, 137,884.98 and 85,370.06 is: 128,694.99
Step by Step Solution
- Step 1: Write the proportion equation
91,466.25 : 137,884.98 = 85,370.06 : x - Step 2: Convert to fraction form
91,466.25/137,884.98 = 85,370.06/x - Step 3: Cross multiply
91,466.25x = 137,884.98 × 85,370.06 - Step 4: Simplify right side
91,466.25x = 11,771,248,006.14 - Step 5: Solve for x
x = 11,771,248,006.14/91,466.25 - Step 6: Final answer
x = 128,694.99
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.