Finding the Fourth Proportional to 145,909.48, 201,448.77 and 91,536.18
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Solution
The fourth proportional to 145,909.48, 201,448.77 and 91,536.18 is: 126,378.70
Step by Step Solution
- Step 1: Write the proportion equation
145,909.48 : 201,448.77 = 91,536.18 : x - Step 2: Convert to fraction form
145,909.48/201,448.77 = 91,536.18/x - Step 3: Cross multiply
145,909.48x = 201,448.77 × 91,536.18 - Step 4: Simplify right side
145,909.48x = 18,439,850,287.70 - Step 5: Solve for x
x = 18,439,850,287.70/145,909.48 - Step 6: Final answer
x = 126,378.70
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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.