Finding the Fourth Proportional to 156,896.19, 216,518.06 and 85,276.19
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Solution
The fourth proportional to 156,896.19, 216,518.06 and 85,276.19 is: 117,681.86
Step by Step Solution
- Step 1: Write the proportion equation
156,896.19 : 216,518.06 = 85,276.19 : x - Step 2: Convert to fraction form
156,896.19/216,518.06 = 85,276.19/x - Step 3: Cross multiply
156,896.19x = 216,518.06 × 85,276.19 - Step 4: Simplify right side
156,896.19x = 18,463,835,222.99 - Step 5: Solve for x
x = 18,463,835,222.99/156,896.19 - Step 6: Final answer
x = 117,681.86
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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.