Finding the Fourth Proportional to 149,968.26, 206,956.16 and 81,985.52
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Solution
The fourth proportional to 149,968.26, 206,956.16 and 81,985.52 is: 113,139.99
Step by Step Solution
- Step 1: Write the proportion equation
149,968.26 : 206,956.16 = 81,985.52 : x - Step 2: Convert to fraction form
149,968.26/206,956.16 = 81,985.52/x - Step 3: Cross multiply
149,968.26x = 206,956.16 × 81,985.52 - Step 4: Simplify right side
149,968.26x = 16,967,408,106.75 - Step 5: Solve for x
x = 16,967,408,106.75/149,968.26 - Step 6: Final answer
x = 113,139.99
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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.