Finding the Fourth Proportional to 105,639.20, 158,458.80 and 97,344.80
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Solution
The fourth proportional to 105,639.20, 158,458.80 and 97,344.80 is: 146,017.20
Step by Step Solution
- Step 1: Write the proportion equation
105,639.20 : 158,458.80 = 97,344.80 : x - Step 2: Convert to fraction form
105,639.20/158,458.80 = 97,344.80/x - Step 3: Cross multiply
105,639.20x = 158,458.80 × 97,344.80 - Step 4: Simplify right side
105,639.20x = 15,425,140,194.24 - Step 5: Solve for x
x = 15,425,140,194.24/105,639.20 - Step 6: Final answer
x = 146,017.20
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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.