Finding the Fourth Proportional to 141,357.42, 211,921.20 and 78,174.99
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Solution
The fourth proportional to 141,357.42, 211,921.20 and 78,174.99 is: 117,198.93
Step by Step Solution
- Step 1: Write the proportion equation
141,357.42 : 211,921.20 = 78,174.99 : x - Step 2: Convert to fraction form
141,357.42/211,921.20 = 78,174.99/x - Step 3: Cross multiply
141,357.42x = 211,921.20 × 78,174.99 - Step 4: Simplify right side
141,357.42x = 16,566,937,690.79 - Step 5: Solve for x
x = 16,566,937,690.79/141,357.42 - Step 6: Final answer
x = 117,198.93
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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.