Finding the Fourth Proportional to 143,421.14, 215,058.26 and 84,274.58
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Solution
The fourth proportional to 143,421.14, 215,058.26 and 84,274.58 is: 126,368.70
Step by Step Solution
- Step 1: Write the proportion equation
143,421.14 : 215,058.26 = 84,274.58 : x - Step 2: Convert to fraction form
143,421.14/215,058.26 = 84,274.58/x - Step 3: Cross multiply
143,421.14x = 215,058.26 × 84,274.58 - Step 4: Simplify right side
143,421.14x = 18,123,943,040.37 - Step 5: Solve for x
x = 18,123,943,040.37/143,421.14 - Step 6: Final answer
x = 126,368.70
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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.