Finding the Fourth Proportional to 157,534.74, 217,403.22 and 85,918.68
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Solution
The fourth proportional to 157,534.74, 217,403.22 and 85,918.68 is: 118,570.66
Step by Step Solution
- Step 1: Write the proportion equation
157,534.74 : 217,403.22 = 85,918.68 : x - Step 2: Convert to fraction form
157,534.74/217,403.22 = 85,918.68/x - Step 3: Cross multiply
157,534.74x = 217,403.22 × 85,918.68 - Step 4: Simplify right side
157,534.74x = 18,678,997,690.15 - Step 5: Solve for x
x = 18,678,997,690.15/157,534.74 - Step 6: Final answer
x = 118,570.66
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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.