Finding the Fourth Proportional to 157,579.20, 217,477.42 and 87,735.53
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Solution
The fourth proportional to 157,579.20, 217,477.42 and 87,735.53 is: 121,085.12
Step by Step Solution
- Step 1: Write the proportion equation
157,579.20 : 217,477.42 = 87,735.53 : x - Step 2: Convert to fraction form
157,579.20/217,477.42 = 87,735.53/x - Step 3: Cross multiply
157,579.20x = 217,477.42 × 87,735.53 - Step 4: Simplify right side
157,579.20x = 19,080,497,031.09 - Step 5: Solve for x
x = 19,080,497,031.09/157,579.20 - Step 6: Final answer
x = 121,085.12
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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.