Finding the Fourth Proportional to 171,771.72, 257,394.74 and 91,820.99
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Solution
The fourth proportional to 171,771.72, 257,394.74 and 91,820.99 is: 137,590.97
Step by Step Solution
- Step 1: Write the proportion equation
171,771.72 : 257,394.74 = 91,820.99 : x - Step 2: Convert to fraction form
171,771.72/257,394.74 = 91,820.99/x - Step 3: Cross multiply
171,771.72x = 257,394.74 × 91,820.99 - Step 4: Simplify right side
171,771.72x = 23,634,238,101.51 - Step 5: Solve for x
x = 23,634,238,101.51/171,771.72 - Step 6: Final answer
x = 137,590.97
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.