Finding the Fourth Proportional to 97,318.20, 145,977.30 and 77,635.20
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Solution
The fourth proportional to 97,318.20, 145,977.30 and 77,635.20 is: 116,452.80
Step by Step Solution
- Step 1: Write the proportion equation
97,318.20 : 145,977.30 = 77,635.20 : x - Step 2: Convert to fraction form
97,318.20/145,977.30 = 77,635.20/x - Step 3: Cross multiply
97,318.20x = 145,977.30 × 77,635.20 - Step 4: Simplify right side
97,318.20x = 11,332,976,880.96 - Step 5: Solve for x
x = 11,332,976,880.96/97,318.20 - Step 6: Final answer
x = 116,452.80
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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.