Finding the Fourth Proportional to 107,811.30, 161,716.95 and 97,313.70
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Solution
The fourth proportional to 107,811.30, 161,716.95 and 97,313.70 is: 145,970.55
Step by Step Solution
- Step 1: Write the proportion equation
107,811.30 : 161,716.95 = 97,313.70 : x - Step 2: Convert to fraction form
107,811.30/161,716.95 = 97,313.70/x - Step 3: Cross multiply
107,811.30x = 161,716.95 × 97,313.70 - Step 4: Simplify right side
107,811.30x = 15,737,274,757.22 - Step 5: Solve for x
x = 15,737,274,757.22/107,811.30 - Step 6: Final answer
x = 145,970.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.