Finding the Fourth Proportional to 156,871.84, 216,485.19 and 85,252.99
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Solution
The fourth proportional to 156,871.84, 216,485.19 and 85,252.99 is: 117,650.24
Step by Step Solution
- Step 1: Write the proportion equation
156,871.84 : 216,485.19 = 85,252.99 : x - Step 2: Convert to fraction form
156,871.84/216,485.19 = 85,252.99/x - Step 3: Cross multiply
156,871.84x = 216,485.19 × 85,252.99 - Step 4: Simplify right side
156,871.84x = 18,456,009,738.22 - Step 5: Solve for x
x = 18,456,009,738.22/156,871.84 - Step 6: Final answer
x = 117,650.24
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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.