Finding the Fourth Proportional to 147,791.40, 203,879.05 and 87,332.79
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Solution
The fourth proportional to 147,791.40, 203,879.05 and 87,332.79 is: 120,476.06
Step by Step Solution
- Step 1: Write the proportion equation
147,791.40 : 203,879.05 = 87,332.79 : x - Step 2: Convert to fraction form
147,791.40/203,879.05 = 87,332.79/x - Step 3: Cross multiply
147,791.40x = 203,879.05 × 87,332.79 - Step 4: Simplify right side
147,791.40x = 17,805,326,259.05 - Step 5: Solve for x
x = 17,805,326,259.05/147,791.40 - Step 6: Final answer
x = 120,476.06
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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.