Finding the Fourth Proportional to 212,138.24, 318,345.86 and 79,124.90
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Solution
The fourth proportional to 212,138.24, 318,345.86 and 79,124.90 is: 118,739.00
Step by Step Solution
- Step 1: Write the proportion equation
212,138.24 : 318,345.86 = 79,124.90 : x - Step 2: Convert to fraction form
212,138.24/318,345.86 = 79,124.90/x - Step 3: Cross multiply
212,138.24x = 318,345.86 × 79,124.90 - Step 4: Simplify right side
212,138.24x = 25,189,082,746.18 - Step 5: Solve for x
x = 25,189,082,746.18/212,138.24 - Step 6: Final answer
x = 118,739.00
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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.