Finding the Fourth Proportional to 212,323.25, 318,534.09 and 72,081.88
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Solution
The fourth proportional to 212,323.25, 318,534.09 and 72,081.88 is: 108,139.52
Step by Step Solution
- Step 1: Write the proportion equation
212,323.25 : 318,534.09 = 72,081.88 : x - Step 2: Convert to fraction form
212,323.25/318,534.09 = 72,081.88/x - Step 3: Cross multiply
212,323.25x = 318,534.09 × 72,081.88 - Step 4: Simplify right side
212,323.25x = 22,960,534,098.21 - Step 5: Solve for x
x = 22,960,534,098.21/212,323.25 - Step 6: Final answer
x = 108,139.52
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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.