Finding the Fourth Proportional to 157,242.08, 216,990.96 and 85,622.96
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Solution
The fourth proportional to 157,242.08, 216,990.96 and 85,622.96 is: 118,157.99
Step by Step Solution
- Step 1: Write the proportion equation
157,242.08 : 216,990.96 = 85,622.96 : x - Step 2: Convert to fraction form
157,242.08/216,990.96 = 85,622.96/x - Step 3: Cross multiply
157,242.08x = 216,990.96 × 85,622.96 - Step 4: Simplify right side
157,242.08x = 18,579,408,288.44 - Step 5: Solve for x
x = 18,579,408,288.44/157,242.08 - Step 6: Final answer
x = 118,157.99
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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.