Finding the Fourth Proportional to 149,215.67, 205,910.91 and 81,230.90
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Solution
The fourth proportional to 149,215.67, 205,910.91 and 81,230.90 is: 112,094.99
Step by Step Solution
- Step 1: Write the proportion equation
149,215.67 : 205,910.91 = 81,230.90 : x - Step 2: Convert to fraction form
149,215.67/205,910.91 = 81,230.90/x - Step 3: Cross multiply
149,215.67x = 205,910.91 × 81,230.90 - Step 4: Simplify right side
149,215.67x = 16,726,328,667.81 - Step 5: Solve for x
x = 16,726,328,667.81/149,215.67 - Step 6: Final answer
x = 112,094.99
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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.