Finding the Fourth Proportional to 142,134.96, 213,131.08 and 47,331.75
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Solution
The fourth proportional to 142,134.96, 213,131.08 and 47,331.75 is: 70,973.86
Step by Step Solution
- Step 1: Write the proportion equation
142,134.96 : 213,131.08 = 47,331.75 : x - Step 2: Convert to fraction form
142,134.96/213,131.08 = 47,331.75/x - Step 3: Cross multiply
142,134.96x = 213,131.08 × 47,331.75 - Step 4: Simplify right side
142,134.96x = 10,087,866,995.79 - Step 5: Solve for x
x = 10,087,866,995.79/142,134.96 - Step 6: Final answer
x = 70,973.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.