Finding the Fourth Proportional to 129,421.65, 194,132.34 and 40,682.91
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Solution
The fourth proportional to 129,421.65, 194,132.34 and 40,682.91 is: 61,024.32
Step by Step Solution
- Step 1: Write the proportion equation
129,421.65 : 194,132.34 = 40,682.91 : x - Step 2: Convert to fraction form
129,421.65/194,132.34 = 40,682.91/x - Step 3: Cross multiply
129,421.65x = 194,132.34 × 40,682.91 - Step 4: Simplify right side
129,421.65x = 7,897,868,516.31 - Step 5: Solve for x
x = 7,897,868,516.31/129,421.65 - Step 6: Final answer
x = 61,024.32
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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.