Finding the Fourth Proportional to 156,141.09, 215,477.70 and 91,648.29
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Solution
The fourth proportional to 156,141.09, 215,477.70 and 91,648.29 is: 126,476.40
Step by Step Solution
- Step 1: Write the proportion equation
156,141.09 : 215,477.70 = 91,648.29 : x - Step 2: Convert to fraction form
156,141.09/215,477.70 = 91,648.29/x - Step 3: Cross multiply
156,141.09x = 215,477.70 × 91,648.29 - Step 4: Simplify right side
156,141.09x = 19,748,162,738.13 - Step 5: Solve for x
x = 19,748,162,738.13/156,141.09 - Step 6: Final answer
x = 126,476.40
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1.5x scale
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.