Finding the Fourth Proportional to 156,643.52, 216,162.25 and 85,021.99
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Solution
The fourth proportional to 156,643.52, 216,162.25 and 85,021.99 is: 117,327.19
Step by Step Solution
- Step 1: Write the proportion equation
156,643.52 : 216,162.25 = 85,021.99 : x - Step 2: Convert to fraction form
156,643.52/216,162.25 = 85,021.99/x - Step 3: Cross multiply
156,643.52x = 216,162.25 × 85,021.99 - Step 4: Simplify right side
156,643.52x = 18,378,543,904.92 - Step 5: Solve for x
x = 18,378,543,904.92/156,643.52 - Step 6: Final answer
x = 117,327.19
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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.