Finding the Fourth Proportional to 157,418.09, 217,241.52 and 85,802.75
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Solution
The fourth proportional to 157,418.09, 217,241.52 and 85,802.75 is: 118,410.28
Step by Step Solution
- Step 1: Write the proportion equation
157,418.09 : 217,241.52 = 85,802.75 : x - Step 2: Convert to fraction form
157,418.09/217,241.52 = 85,802.75/x - Step 3: Cross multiply
157,418.09x = 217,241.52 × 85,802.75 - Step 4: Simplify right side
157,418.09x = 18,639,919,830.18 - Step 5: Solve for x
x = 18,639,919,830.18/157,418.09 - Step 6: Final answer
x = 118,410.28
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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.