Finding the Fourth Proportional to 157,015.45, 216,682.34 and 85,395.99
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Solution
The fourth proportional to 157,015.45, 216,682.34 and 85,395.99 is: 117,847.02
Step by Step Solution
- Step 1: Write the proportion equation
157,015.45 : 216,682.34 = 85,395.99 : x - Step 2: Convert to fraction form
157,015.45/216,682.34 = 85,395.99/x - Step 3: Cross multiply
157,015.45x = 216,682.34 × 85,395.99 - Step 4: Simplify right side
157,015.45x = 18,503,802,586.91 - Step 5: Solve for x
x = 18,503,802,586.91/157,015.45 - Step 6: Final answer
x = 117,847.02
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1.5x scale
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.