Finding the Fourth Proportional to 149,246.21, 205,963.69 and 81,266.05
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Solution
The fourth proportional to 149,246.21, 205,963.69 and 81,266.05 is: 112,149.28
Step by Step Solution
- Step 1: Write the proportion equation
149,246.21 : 205,963.69 = 81,266.05 : x - Step 2: Convert to fraction form
149,246.21/205,963.69 = 81,266.05/x - Step 3: Cross multiply
149,246.21x = 205,963.69 × 81,266.05 - Step 4: Simplify right side
149,246.21x = 16,737,855,529.72 - Step 5: Solve for x
x = 16,737,855,529.72/149,246.21 - Step 6: Final answer
x = 112,149.28
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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.