Finding the Fourth Proportional to 186,871.86, 257,793.48 and 122,312.70
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Solution
The fourth proportional to 186,871.86, 257,793.48 and 122,312.70 is: 168,732.82
Step by Step Solution
- Step 1: Write the proportion equation
186,871.86 : 257,793.48 = 122,312.70 : x - Step 2: Convert to fraction form
186,871.86/257,793.48 = 122,312.70/x - Step 3: Cross multiply
186,871.86x = 257,793.48 × 122,312.70 - Step 4: Simplify right side
186,871.86x = 31,531,416,581.20 - Step 5: Solve for x
x = 31,531,416,581.20/186,871.86 - Step 6: Final answer
x = 168,732.82
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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.