Finding the Fourth Proportional to 122,515.60, 171,696.80 and 122,515.60
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Solution
The fourth proportional to 122,515.60, 171,696.80 and 122,515.60 is: 171,696.80
Step by Step Solution
- Step 1: Write the proportion equation
122,515.60 : 171,696.80 = 122,515.60 : x - Step 2: Convert to fraction form
122,515.60/171,696.80 = 122,515.60/x - Step 3: Cross multiply
122,515.60x = 171,696.80 × 122,515.60 - Step 4: Simplify right side
122,515.60x = 21,035,536,470.08 - Step 5: Solve for x
x = 21,035,536,470.08/122,515.60 - Step 6: Final answer
x = 171,696.80
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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.