Finding the Fourth Proportional to 129,779.08, 194,668.62 and 31,283.08
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Solution
The fourth proportional to 129,779.08, 194,668.62 and 31,283.08 is: 46,924.62
Step by Step Solution
- Step 1: Write the proportion equation
129,779.08 : 194,668.62 = 31,283.08 : x - Step 2: Convert to fraction form
129,779.08/194,668.62 = 31,283.08/x - Step 3: Cross multiply
129,779.08x = 194,668.62 × 31,283.08 - Step 4: Simplify right side
129,779.08x = 6,089,834,012.95 - Step 5: Solve for x
x = 6,089,834,012.95/129,779.08 - Step 6: Final answer
x = 46,924.62
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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.