Finding the Fourth Proportional to 103,638.90, 154,701.65 and 88,942.26
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Solution
The fourth proportional to 103,638.90, 154,701.65 and 88,942.26 is: 132,763.99
Step by Step Solution
- Step 1: Write the proportion equation
103,638.90 : 154,701.65 = 88,942.26 : x - Step 2: Convert to fraction form
103,638.90/154,701.65 = 88,942.26/x - Step 3: Cross multiply
103,638.90x = 154,701.65 × 88,942.26 - Step 4: Simplify right side
103,638.90x = 13,759,514,376.73 - Step 5: Solve for x
x = 13,759,514,376.73/103,638.90 - Step 6: Final answer
x = 132,763.99
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.