Finding the Fourth Proportional to 157,181.30, 216,496.99 and 120,813.20
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Solution
The fourth proportional to 157,181.30, 216,496.99 and 120,813.20 is: 166,404.62
Step by Step Solution
- Step 1: Write the proportion equation
157,181.30 : 216,496.99 = 120,813.20 : x - Step 2: Convert to fraction form
157,181.30/216,496.99 = 120,813.20/x - Step 3: Cross multiply
157,181.30x = 216,496.99 × 120,813.20 - Step 4: Simplify right side
157,181.30x = 26,155,694,152.27 - Step 5: Solve for x
x = 26,155,694,152.27/157,181.30 - Step 6: Final answer
x = 166,404.62
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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.