Finding the Fourth Proportional to 103,779.10, 155,668.65 and 68,349.70
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Solution
The fourth proportional to 103,779.10, 155,668.65 and 68,349.70 is: 102,524.55
Step by Step Solution
- Step 1: Write the proportion equation
103,779.10 : 155,668.65 = 68,349.70 : x - Step 2: Convert to fraction form
103,779.10/155,668.65 = 68,349.70/x - Step 3: Cross multiply
103,779.10x = 155,668.65 × 68,349.70 - Step 4: Simplify right side
103,779.10x = 10,639,905,526.91 - Step 5: Solve for x
x = 10,639,905,526.91/103,779.10 - Step 6: Final answer
x = 102,524.55
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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.