Finding the Fourth Proportional to 124,234.42, 171,399.84 and 81,239.08
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Solution
The fourth proportional to 124,234.42, 171,399.84 and 81,239.08 is: 112,081.38
Step by Step Solution
- Step 1: Write the proportion equation
124,234.42 : 171,399.84 = 81,239.08 : x - Step 2: Convert to fraction form
124,234.42/171,399.84 = 81,239.08/x - Step 3: Cross multiply
124,234.42x = 171,399.84 × 81,239.08 - Step 4: Simplify right side
124,234.42x = 13,924,365,313.75 - Step 5: Solve for x
x = 13,924,365,313.75/124,234.42 - Step 6: Final answer
x = 112,081.38
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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.