Finding the Fourth Proportional to 107,311.30, 148,107.92 and 61,981.12
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Solution
The fourth proportional to 107,311.30, 148,107.92 and 61,981.12 is: 85,544.53
Step by Step Solution
- Step 1: Write the proportion equation
107,311.30 : 148,107.92 = 61,981.12 : x - Step 2: Convert to fraction form
107,311.30/148,107.92 = 61,981.12/x - Step 3: Cross multiply
107,311.30x = 148,107.92 × 61,981.12 - Step 4: Simplify right side
107,311.30x = 9,179,894,762.47 - Step 5: Solve for x
x = 9,179,894,762.47/107,311.30 - Step 6: Final answer
x = 85,544.53
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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.