Finding the Fourth Proportional to 155,969.58, 215,238.67 and 84,349.60
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Solution
The fourth proportional to 155,969.58, 215,238.67 and 84,349.60 is: 116,402.80
Step by Step Solution
- Step 1: Write the proportion equation
155,969.58 : 215,238.67 = 84,349.60 : x - Step 2: Convert to fraction form
155,969.58/215,238.67 = 84,349.60/x - Step 3: Cross multiply
155,969.58x = 215,238.67 × 84,349.60 - Step 4: Simplify right side
155,969.58x = 18,155,295,719.03 - Step 5: Solve for x
x = 18,155,295,719.03/155,969.58 - Step 6: Final answer
x = 116,402.80
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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.