Finding the Fourth Proportional to 149,312.88, 206,045.64 and 81,328.50
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Solution
The fourth proportional to 149,312.88, 206,045.64 and 81,328.50 is: 112,229.99
Step by Step Solution
- Step 1: Write the proportion equation
149,312.88 : 206,045.64 = 81,328.50 : x - Step 2: Convert to fraction form
149,312.88/206,045.64 = 81,328.50/x - Step 3: Cross multiply
149,312.88x = 206,045.64 × 81,328.50 - Step 4: Simplify right side
149,312.88x = 16,757,382,832.74 - Step 5: Solve for x
x = 16,757,382,832.74/149,312.88 - Step 6: Final answer
x = 112,229.99
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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.