Finding the Fourth Proportional to 157,138.60, 235,685.76 and 82,234.12
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Solution
The fourth proportional to 157,138.60, 235,685.76 and 82,234.12 is: 123,339.59
Step by Step Solution
- Step 1: Write the proportion equation
157,138.60 : 235,685.76 = 82,234.12 : x - Step 2: Convert to fraction form
157,138.60/235,685.76 = 82,234.12/x - Step 3: Cross multiply
157,138.60x = 235,685.76 × 82,234.12 - Step 4: Simplify right side
157,138.60x = 19,381,411,070.13 - Step 5: Solve for x
x = 19,381,411,070.13/157,138.60 - Step 6: Final answer
x = 123,339.59
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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.