Finding the Fourth Proportional to 121,287.70, 170,152.70 and 121,287.70
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Solution
The fourth proportional to 121,287.70, 170,152.70 and 121,287.70 is: 170,152.70
Step by Step Solution
- Step 1: Write the proportion equation
121,287.70 : 170,152.70 = 121,287.70 : x - Step 2: Convert to fraction form
121,287.70/170,152.70 = 121,287.70/x - Step 3: Cross multiply
121,287.70x = 170,152.70 × 121,287.70 - Step 4: Simplify right side
121,287.70x = 20,637,429,631.79 - Step 5: Solve for x
x = 20,637,429,631.79/121,287.70 - Step 6: Final answer
x = 170,152.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.