Finding the Fourth Proportional to 129,778.08, 194,667.12 and 31,282.08
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Solution
The fourth proportional to 129,778.08, 194,667.12 and 31,282.08 is: 46,923.12
Step by Step Solution
- Step 1: Write the proportion equation
129,778.08 : 194,667.12 = 31,282.08 : x - Step 2: Convert to fraction form
129,778.08/194,667.12 = 31,282.08/x - Step 3: Cross multiply
129,778.08x = 194,667.12 × 31,282.08 - Step 4: Simplify right side
129,778.08x = 6,089,592,421.21 - Step 5: Solve for x
x = 6,089,592,421.21/129,778.08 - Step 6: Final answer
x = 46,923.12
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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.