Finding the Fourth Proportional to 157,181.42, 216,497.16 and 120,813.32
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Solution
The fourth proportional to 157,181.42, 216,497.16 and 120,813.32 is: 166,404.79
Step by Step Solution
- Step 1: Write the proportion equation
157,181.42 : 216,497.16 = 120,813.32 : x - Step 2: Convert to fraction form
157,181.42/216,497.16 = 120,813.32/x - Step 3: Cross multiply
157,181.42x = 216,497.16 × 120,813.32 - Step 4: Simplify right side
157,181.42x = 26,155,741,211.41 - Step 5: Solve for x
x = 26,155,741,211.41/157,181.42 - Step 6: Final answer
x = 166,404.79
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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.