Finding the Fourth Proportional to 156,090.69, 215,405.70 and 84,470.70
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Solution
The fourth proportional to 156,090.69, 215,405.70 and 84,470.70 is: 116,569.86
Step by Step Solution
- Step 1: Write the proportion equation
156,090.69 : 215,405.70 = 84,470.70 : x - Step 2: Convert to fraction form
156,090.69/215,405.70 = 84,470.70/x - Step 3: Cross multiply
156,090.69x = 215,405.70 × 84,470.70 - Step 4: Simplify right side
156,090.69x = 18,195,469,185.96 - Step 5: Solve for x
x = 18,195,469,185.96/156,090.69 - Step 6: Final answer
x = 116,569.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.