Finding the Fourth Proportional to 107,430.40, 160,972.80 and 67,916.80
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Solution
The fourth proportional to 107,430.40, 160,972.80 and 67,916.80 is: 101,765.96
Step by Step Solution
- Step 1: Write the proportion equation
107,430.40 : 160,972.80 = 67,916.80 : x - Step 2: Convert to fraction form
107,430.40/160,972.80 = 67,916.80/x - Step 3: Cross multiply
107,430.40x = 160,972.80 × 67,916.80 - Step 4: Simplify right side
107,430.40x = 10,932,757,463.04 - Step 5: Solve for x
x = 10,932,757,463.04/107,430.40 - Step 6: Final answer
x = 101,765.96
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1.5x scale
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.