Finding the Fourth Proportional to 151,555.62, 209,148.21 and 83,574.99
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Solution
The fourth proportional to 151,555.62, 209,148.21 and 83,574.99 is: 115,334.29
Step by Step Solution
- Step 1: Write the proportion equation
151,555.62 : 209,148.21 = 83,574.99 : x - Step 2: Convert to fraction form
151,555.62/209,148.21 = 83,574.99/x - Step 3: Cross multiply
151,555.62x = 209,148.21 × 83,574.99 - Step 4: Simplify right side
151,555.62x = 17,479,559,559.27 - Step 5: Solve for x
x = 17,479,559,559.27/151,555.62 - Step 6: Final answer
x = 115,334.29
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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.