Finding the Fourth Proportional to 156,936.37, 216,569.64 and 85,318.18
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Solution
The fourth proportional to 156,936.37, 216,569.64 and 85,318.18 is: 117,737.70
Step by Step Solution
- Step 1: Write the proportion equation
156,936.37 : 216,569.64 = 85,318.18 : x - Step 2: Convert to fraction form
156,936.37/216,569.64 = 85,318.18/x - Step 3: Cross multiply
156,936.37x = 216,569.64 × 85,318.18 - Step 4: Simplify right side
156,936.37x = 18,477,327,528.06 - Step 5: Solve for x
x = 18,477,327,528.06/156,936.37 - Step 6: Final answer
x = 117,737.70
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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.