Finding the Fourth Proportional to 156,237.21, 215,591.94 and 87,313.95
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Solution
The fourth proportional to 156,237.21, 215,591.94 and 87,313.95 is: 120,484.64
Step by Step Solution
- Step 1: Write the proportion equation
156,237.21 : 215,591.94 = 87,313.95 : x - Step 2: Convert to fraction form
156,237.21/215,591.94 = 87,313.95/x - Step 3: Cross multiply
156,237.21x = 215,591.94 × 87,313.95 - Step 4: Simplify right side
156,237.21x = 18,824,183,869.56 - Step 5: Solve for x
x = 18,824,183,869.56/156,237.21 - Step 6: Final answer
x = 120,484.64
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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.