Finding the Fourth Proportional to 156,864.36, 216,472.14 and 85,243.08
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Solution
The fourth proportional to 156,864.36, 216,472.14 and 85,243.08 is: 117,635.08
Step by Step Solution
- Step 1: Write the proportion equation
156,864.36 : 216,472.14 = 85,243.08 : x - Step 2: Convert to fraction form
156,864.36/216,472.14 = 85,243.08/x - Step 3: Cross multiply
156,864.36x = 216,472.14 × 85,243.08 - Step 4: Simplify right side
156,864.36x = 18,452,751,947.79 - Step 5: Solve for x
x = 18,452,751,947.79/156,864.36 - Step 6: Final answer
x = 117,635.08
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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.