Finding the Fourth Proportional to 105,378.14, 145,435.11 and 69,110.08
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Solution
The fourth proportional to 105,378.14, 145,435.11 and 69,110.08 is: 95,380.62
Step by Step Solution
- Step 1: Write the proportion equation
105,378.14 : 145,435.11 = 69,110.08 : x - Step 2: Convert to fraction form
105,378.14/145,435.11 = 69,110.08/x - Step 3: Cross multiply
105,378.14x = 145,435.11 × 69,110.08 - Step 4: Simplify right side
105,378.14x = 10,051,032,086.91 - Step 5: Solve for x
x = 10,051,032,086.91/105,378.14 - Step 6: Final answer
x = 95,380.62
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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.