Finding the Fourth Proportional to 149,492.62, 206,301.42 and 81,509.02
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Solution
The fourth proportional to 149,492.62, 206,301.42 and 81,509.02 is: 112,483.32
Step by Step Solution
- Step 1: Write the proportion equation
149,492.62 : 206,301.42 = 81,509.02 : x - Step 2: Convert to fraction form
149,492.62/206,301.42 = 81,509.02/x - Step 3: Cross multiply
149,492.62x = 206,301.42 × 81,509.02 - Step 4: Simplify right side
149,492.62x = 16,815,426,568.81 - Step 5: Solve for x
x = 16,815,426,568.81/149,492.62 - Step 6: Final answer
x = 112,483.32
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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.