Finding the Fourth Proportional to 212,721.60, 318,980.88 and 124,000.68
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Solution
The fourth proportional to 212,721.60, 318,980.88 and 124,000.68 is: 185,941.84
Step by Step Solution
- Step 1: Write the proportion equation
212,721.60 : 318,980.88 = 124,000.68 : x - Step 2: Convert to fraction form
212,721.60/318,980.88 = 124,000.68/x - Step 3: Cross multiply
212,721.60x = 318,980.88 × 124,000.68 - Step 4: Simplify right side
212,721.60x = 39,553,846,027.00 - Step 5: Solve for x
x = 39,553,846,027.00/212,721.60 - Step 6: Final answer
x = 185,941.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.