Finding the Fourth Proportional to 142,988.76, 197,324.64 and 79,327.08
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Solution
The fourth proportional to 142,988.76, 197,324.64 and 79,327.08 is: 109,471.45
Step by Step Solution
- Step 1: Write the proportion equation
142,988.76 : 197,324.64 = 79,327.08 : x - Step 2: Convert to fraction form
142,988.76/197,324.64 = 79,327.08/x - Step 3: Cross multiply
142,988.76x = 197,324.64 × 79,327.08 - Step 4: Simplify right side
142,988.76x = 15,653,187,503.25 - Step 5: Solve for x
x = 15,653,187,503.25/142,988.76 - Step 6: Final answer
x = 109,471.45
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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.