Finding the Fourth Proportional to 155,422.09, 214,482.80 and 91,763.98
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Solution
The fourth proportional to 155,422.09, 214,482.80 and 91,763.98 is: 126,634.48
Step by Step Solution
- Step 1: Write the proportion equation
155,422.09 : 214,482.80 = 91,763.98 : x - Step 2: Convert to fraction form
155,422.09/214,482.80 = 91,763.98/x - Step 3: Cross multiply
155,422.09x = 214,482.80 × 91,763.98 - Step 4: Simplify right side
155,422.09x = 19,681,795,369.54 - Step 5: Solve for x
x = 19,681,795,369.54/155,422.09 - Step 6: Final answer
x = 126,634.48
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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.