Finding the Fourth Proportional to 119,684.39, 178,794.23 and 86,117.99
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Solution
The fourth proportional to 119,684.39, 178,794.23 and 86,117.99 is: 128,650.02
Step by Step Solution
- Step 1: Write the proportion equation
119,684.39 : 178,794.23 = 86,117.99 : x - Step 2: Convert to fraction form
119,684.39/178,794.23 = 86,117.99/x - Step 3: Cross multiply
119,684.39x = 178,794.23 × 86,117.99 - Step 4: Simplify right side
119,684.39x = 15,397,399,711.20 - Step 5: Solve for x
x = 15,397,399,711.20/119,684.39 - Step 6: Final answer
x = 128,650.02
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.