Finding the Fourth Proportional to 105,185.12, 145,155.12 and 62,745.44
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Solution
The fourth proportional to 105,185.12, 145,155.12 and 62,745.44 is: 86,588.50
Step by Step Solution
- Step 1: Write the proportion equation
105,185.12 : 145,155.12 = 62,745.44 : x - Step 2: Convert to fraction form
105,185.12/145,155.12 = 62,745.44/x - Step 3: Cross multiply
105,185.12x = 145,155.12 × 62,745.44 - Step 4: Simplify right side
105,185.12x = 9,107,821,872.65 - Step 5: Solve for x
x = 9,107,821,872.65/105,185.12 - Step 6: Final answer
x = 86,588.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.