Finding the Fourth Proportional to 145,153.80, 217,730.70 and 136,405.80
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Solution
The fourth proportional to 145,153.80, 217,730.70 and 136,405.80 is: 204,608.70
Step by Step Solution
- Step 1: Write the proportion equation
145,153.80 : 217,730.70 = 136,405.80 : x - Step 2: Convert to fraction form
145,153.80/217,730.70 = 136,405.80/x - Step 3: Cross multiply
145,153.80x = 217,730.70 × 136,405.80 - Step 4: Simplify right side
145,153.80x = 29,699,730,318.06 - Step 5: Solve for x
x = 29,699,730,318.06/145,153.80 - Step 6: Final answer
x = 204,608.70
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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.