Finding the Fourth Proportional to 121,209.70, 181,814.55 and 47,337.70
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Solution
The fourth proportional to 121,209.70, 181,814.55 and 47,337.70 is: 71,006.55
Step by Step Solution
- Step 1: Write the proportion equation
121,209.70 : 181,814.55 = 47,337.70 : x - Step 2: Convert to fraction form
121,209.70/181,814.55 = 47,337.70/x - Step 3: Cross multiply
121,209.70x = 181,814.55 × 47,337.70 - Step 4: Simplify right side
121,209.70x = 8,606,682,623.54 - Step 5: Solve for x
x = 8,606,682,623.54/121,209.70 - Step 6: Final answer
x = 71,006.55
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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.