Finding the Fourth Proportional to 151,855.90, 209,601.68 and 87,332.19
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Solution
The fourth proportional to 151,855.90, 209,601.68 and 87,332.19 is: 120,541.74
Step by Step Solution
- Step 1: Write the proportion equation
151,855.90 : 209,601.68 = 87,332.19 : x - Step 2: Convert to fraction form
151,855.90/209,601.68 = 87,332.19/x - Step 3: Cross multiply
151,855.90x = 209,601.68 × 87,332.19 - Step 4: Simplify right side
151,855.90x = 18,304,973,742.08 - Step 5: Solve for x
x = 18,304,973,742.08/151,855.90 - Step 6: Final answer
x = 120,541.74
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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.