Finding the Fourth Proportional to 157,012.40, 216,674.73 and 85,390.79
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Solution
The fourth proportional to 157,012.40, 216,674.73 and 85,390.79 is: 117,837.99
Step by Step Solution
- Step 1: Write the proportion equation
157,012.40 : 216,674.73 = 85,390.79 : x - Step 2: Convert to fraction form
157,012.40/216,674.73 = 85,390.79/x - Step 3: Cross multiply
157,012.40x = 216,674.73 × 85,390.79 - Step 4: Simplify right side
157,012.40x = 18,502,025,284.36 - Step 5: Solve for x
x = 18,502,025,284.36/157,012.40 - Step 6: Final answer
x = 117,837.99
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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.