Finding the Fourth Proportional to 115,343.24, 159,273.81 and 72,397.17
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Solution
The fourth proportional to 115,343.24, 159,273.81 and 72,397.17 is: 99,970.95
Step by Step Solution
- Step 1: Write the proportion equation
115,343.24 : 159,273.81 = 72,397.17 : x - Step 2: Convert to fraction form
115,343.24/159,273.81 = 72,397.17/x - Step 3: Cross multiply
115,343.24x = 159,273.81 × 72,397.17 - Step 4: Simplify right side
115,343.24x = 11,530,973,099.12 - Step 5: Solve for x
x = 11,530,973,099.12/115,343.24 - Step 6: Final answer
x = 99,970.95
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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.