Finding the Fourth Proportional to 155,729.07, 214,906.16 and 84,109.07
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Solution
The fourth proportional to 155,729.07, 214,906.16 and 84,109.07 is: 116,070.54
Step by Step Solution
- Step 1: Write the proportion equation
155,729.07 : 214,906.16 = 84,109.07 : x - Step 2: Convert to fraction form
155,729.07/214,906.16 = 84,109.07/x - Step 3: Cross multiply
155,729.07x = 214,906.16 × 84,109.07 - Step 4: Simplify right side
155,729.07x = 18,075,558,002.41 - Step 5: Solve for x
x = 18,075,558,002.41/155,729.07 - Step 6: Final answer
x = 116,070.54
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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.